robot

cy-noun

robot m (plural robotiaid or robotau, not mutable)

Borrowed from English robot, from Czech robot.


had

head

had m pl or m sg (singulative hedyn, plural hadau)

From Middle Welsh hat, from Proto-Brythonic *had, from Proto-Celtic *satos, from Proto-Indo-European *sh₁-tó-, past participle of *seh₁- (“to sow”). Cognate with English seed.


cell

cy-noun

cell f (plural celloedd, diminutive cellan)

celloedd (plural)
cellan (diminutive)
cell (mutation mutation-radical)
gell (mutation mutation-soft)
nghell (mutation mutation-nasal)
chell (mutation mutation-aspirate)

From Middle Welsh kell, from Proto-Brythonic *kell, from Latin cella.


cut

Borrowed from Middle English [Term?], from Old Northern French cot, cote (“hut, cottage”).

der

hut, shed; cottage, hovel; pen, coop; cage


capel

cy-noun

capel m (plural capeli or capelau or capelydd or capeloedd)

capeli (plural)
capelau (plural)
capelydd (plural)
capeloedd (plural)
capel (mutation mutation-radical)
gapel (mutation mutation-soft)
nghapel (mutation mutation-nasal)
chapel (mutation mutation-aspirate)

From Middle Welsh capel, borrowed from Late Latin cappella (“little cloak; chapel”), diminutive of Latin cappa (“cloak, cape”).


betws

betysau (plural)
betws (mutation mutation-radical)
fetws (mutation mutation-soft)
metws (mutation mutation-nasal)

From Middle Welsh betws, borrowed from Old English bedhūs (“house of prayer”, literally “bede-house”).


eglwys

eglwysi (plural)
eglwysydd (plural)
eglwys (mutation mutation-radical)
heglwys (mutation prothesis-h)

From Proto-Brythonic *egluɨs (compare Cornish eglos, Breton iliz), borrowed from Latin ecclēsia (“church”), from Ancient Greek ἐκκλησίᾱ (ekklēsíā).


trefol

cy-adj

trefol (feminine singular trefol, plural trefol, equative trefoled, comparative trefolach, superlative trefolaf)

trefol (feminine singular)
trefol (plural)
trefoled (equative)
trefolach (comparative)
trefolaf (superlative)
trefol (mutation mutation-radical)
drefol (mutation mutation-soft)
nhrefol (mutation mutation-nasal)
threfol (mutation mutation-aspirate)

cynllunio trefol


llan

llannau (plural)
llan (mutation mutation-radical)
lan (mutation mutation-soft)

From Middle Welsh llann, from Proto-Brythonic *llann, from Proto-Celtic *landā, from Proto-Indo-European *lendʰ- (“land, heath”).


ysgol

From Middle Welsh yscol, from Proto-Brythonic *ɨskol, from Latin schola, from Ancient Greek σχολή (skholḗ).

Bydd hi’n gadael yr ysgol yr haf ’ma i fynd i’r coleg.

She will leave school this summer to go to college.


tŷ bach

tai bach (plural)
tŷ bach (mutation mutation-radical)
dŷ bach (mutation mutation-soft)
nhŷ bach (mutation mutation-nasal)
thŷ bach (mutation mutation-aspirate)

/ˌtɨː ˈbaːχ/

(euphemistic) A little house: an outhouse.


cachu

cachu (mutation mutation-radical)
gachu (mutation mutation-soft)
nghachu (mutation mutation-nasal)
chachu (mutation mutation-aspirate)

From Middle Welsh cachu, from Proto-Brythonic *kax, from Proto-Celtic *kakkā, from Proto-Indo-European *kakko- (compare Latin cacō).

(vulgar, offensive) shit (instance of defecation)


pont

pontydd (plural)
pont (mutation mutation-radical)
bont (mutation mutation-soft)
mhont (mutation mutation-nasal)
phont (mutation mutation-aspirate)

From Middle Welsh pont, from Old Welsh pont, from Proto-Brythonic *pont, a borrowing from Latin pōns, pōntem. Cognate with Cornish pons, Breton pont.

A fo ben bid bont.

Let him who would be a leader be a bridge.


oriel

cy-noun

oriel m or f (plural orielau or orielydd or orieli)

orielau (plural)
orielydd (plural)
orieli (plural)
oriel (mutation mutation-radical)
horiel (mutation prothesis-h)

From Middle English oriel, from Old French oriol (“gallery, corridor”), Late Latin oriolum (“portico, hall”), probably from Latin aureolus (“gilded”), applied to an apartment decorated with gilding.


prifysgol

prifysgolion (plural)
prifysgol (mutation mutation-radical)
brifysgol (mutation mutation-soft)
mhrifysgol (mutation mutation-nasal)
phrifysgol (mutation mutation-aspirate)

From prif- (“chief”) + ysgol (“school”).


punt

punnoedd (plural)
punnau (plural)
punt (mutation mutation-radical)
bunt (mutation mutation-soft)
mhunt (mutation mutation-nasal)
phunt (mutation mutation-aspirate)

Costiodd yr holl adeiladau hyn tua deg a thrigain mil o bunnau.

1874 May 20, “Llundain a'ch "Ewyrth"”, in Baner ac Amserau Cymru, page 13

All these buildings cost about seventy thousand pounds.


acer

aceri (plural)
acer (mutation mutation-radical)
hacer (mutation prothesis-h)


toiled

toiledau (plural)
toiledi (plural)
toiled (mutation mutation-radical)
doiled (mutation mutation-soft)
nhoiled (mutation mutation-nasal)
thoiled (mutation mutation-aspirate)

Borrowed from English toilet, from French toilette.


dolen

dolennau (plural)
dolenni (plural)
dolen (mutation mutation-radical)
ddolen (mutation mutation-soft)
nolen (mutation mutation-nasal)

From dôl (“dale, valley; loop, ring”) + -en.


synagog

synagog m (plural synagogau, not mutable)

/ˈsɨ̞naˌɡɔɡ/

From Middle Welsh synagoc, from Middle English synagoge, from Old French synagoge, from Latin synagōga, from Ancient Greek συναγωγή (sunagōgḗ).


yw

ywyn (singulative)
yw (mutation mutation-radical)
hyw (mutation prothesis-h)

From Proto-Celtic *iwos (“yew”), from Proto-Indo-European *h₁eyHw- (“yew”).


stôl

stôl m (plural stoliau or stolion or stôls, not mutable)

stoliau (plural)
stolion (plural)
stôls (plural)


tŷ

tai (plural)
tŷ (mutation mutation-radical)
dŷ (mutation mutation-soft)
nhŷ (mutation mutation-nasal)
thŷ (mutation mutation-aspirate)

From Middle Welsh ty, from Proto-Brythonic *tɨɣ, from Proto-Celtic *tegos, from Proto-Indo-European *(s)teg-.


allanfa dân

allanfeydd tân (plural)
allanfa dân (mutation mutation-radical)
hallanfa dân (mutation prothesis-h)


gwaith

gwaith m (plural gweithiau or gweithoedd or gweithydd or gweithion)

gweithiau (plural)
gweithoedd (plural)
gweithydd (plural)
gweithion (plural)

Doublets; from Middle Welsh gweith, from Proto-Brythonic *gweiθ, from Proto-Celtic *wextā (“time, course, turn”) (compare Cornish gweyth, Breton gwezh, Old Irish fecht (“journey; time, occasion”), Irish feacht (“journey; time, occasion”)), feminine past participle of Proto-Indo-European *weǵʰ- (“to carry, drive”).


palas

palasau (plural)
palas (mutation mutation-radical)
balas (mutation mutation-soft)
mhalas (mutation mutation-nasal)
phalas (mutation mutation-aspirate)

Borrowed from Old French palais, from Latin palātium.


folt

cy-noun

folt m (plural foltau or foltiau, not mutable)

Borrowed from English volt, from the name of the Italian physicist Alessandro Volta.


plas

plasau (plural)
plas (mutation mutation-radical)
blas (mutation mutation-soft)
mhlas (mutation mutation-nasal)
phlas (mutation mutation-aspirate)


canopi

canopïau (plural)
canopi (mutation mutation-radical)
ganopi (mutation mutation-soft)
nghanopi (mutation mutation-nasal)
chanopi (mutation mutation-aspirate)


corff

cyrff (plural)
corff (mutation mutation-radical)
gorff (mutation mutation-soft)
nghorff (mutation mutation-nasal)
chorff (mutation mutation-aspirate)

From Middle Welsh corff, from Proto-Brythonic *korf, from Latin corpus. Ultimately from the same Proto-Indo-European root, *krep-, as cryf (“strong”). Compare Breton korf.


milltir

milltiroedd (plural)
milltir (mutation mutation-radical)
filltir (mutation mutation-soft)

Ultimately from Latin mille (passuum) (“one thousand paces”) + Welsh tir (“land”).


môr-filltir

mor-filltiroedd (plural)
môr-filltir (mutation mutation-radical)
fôr-filltir (mutation mutation-soft)


templed

templedi (plural)
templed (mutation mutation-radical)
dempled (mutation mutation-soft)
nhempled (mutation mutation-nasal)
thempled (mutation mutation-aspirate)


neuadd

Old Welsh nouod, from a Proto-Celtic *nom-od- (“temple”), which may be related to the root of *nemos (“heaven, sky”).


cegin

ceginau (plural)
ceginoedd (plural)
cegin (mutation mutation-radical)
gegin (mutation mutation-soft)
nghegin (mutation mutation-nasal)
chegin (mutation mutation-aspirate)

From Middle Welsh kegyn, from Proto-Brythonic *kėgin (whence also Breton and Cornish kegin), from Late Latin cocīna, from earlier coquīna.


gwesty

gwestai (plural)
gwesty (mutation mutation-radical)
westy (mutation mutation-soft)
ngwesty (mutation mutation-nasal)

hotel (establishment providing accommodation)


ysbyty

ysbytai (plural)
ysbyty (mutation mutation-radical)
hysbyty (mutation prothesis-h)

From Middle Welsh yspyty, a compound of yspyt + ty (“house”) (modern tŷ). The first element is from Proto-Brythonic *öspɨd, from Latin hospitium (“hospitality; inn”).


ystafell aros

cy-noun

ystafell aros f (plural ystafelloedd aros)

ystafelloedd aros (plural)
ystafell aros (mutation mutation-radical)
hystafell aros (mutation prothesis-h)


amgueddfa

amgueddfa f (plural amgueddfeydd or amgueddfâu or amgueddfaoedd)

amgueddfeydd (plural)
amgueddfâu (plural)
amgueddfaoedd (plural)
amgueddfa (mutation mutation-radical)
hamgueddfa (mutation prothesis-h)

/ˌamɡɨ̞ˈɛðva/

From amguedd (“treasure, wealth”) + -fa, -ma; coined by William Owen Pughe.


blith

blithion (plural)
blith (mutation mutation-radical)
flith (mutation mutation-soft)
mlith (mutation mutation-nasal)

From Proto-Brythonic *bliθ, from Proto-Celtic *mlixtus (compare Irish bleacht), from Proto-Indo-European *h₂ml̥ǵtus, from *h₂melǵ- (compare English milk, Latin mulgeō (“to milk”)).


ysgol breswyl

ysgol breswyl f (plural ysgolion preswyl)

ysgolion preswyl (plural)
ysgol breswyl (mutation mutation-radical)
hysgol breswyl (mutation prothesis-h)


preswyl

cy-adj

preswyl (feminine singular preswyl, plural preswyl, not comparable)

preswyl (feminine singular)
preswyl (plural)


preswyl

preswylion (plural)
preswyl (mutation mutation-radical)
breswyl (mutation mutation-soft)
mhreswyl (mutation mutation-nasal)
phreswyl (mutation mutation-aspirate)


ystafell

ystafelloedd (plural)
ystafell (mutation mutation-radical)
hystafell (mutation prothesis-h)

From Middle Welsh ystauell, from Proto-Brythonic *ɨstavell, from Vulgar Latin *(i)stabellum, from Latin stabulum (“dwelling; stable”); cognate with English stable (“building for horses”).


gwreiddyn

gwreiddiau (plural)
gwreiddyn (mutation mutation-radical)
wreiddyn (mutation mutation-soft)
ngwreiddyn (mutation mutation-nasal)

(figurative) source, origin, foundation, basis

(arithmetic) root, a number which, raised to a specified power, yields a previously specified number or expression


perllan

perllannau (plural)
perllan (mutation mutation-radical)
berllan (mutation mutation-soft)
mherllan (mutation mutation-nasal)
pherllan (mutation mutation-aspirate)

From pêr (“pears; sweet fruit; pear trees; sweet-fruit trees”) + llan (“enclosure, yard”).


stafell

cy-noun

stafell f (plural stafelloedd, not mutable)


caban

cabanau (plural)
caban (mutation mutation-radical)
gaban (mutation mutation-soft)
nghaban (mutation mutation-nasal)
chaban (mutation mutation-aspirate)

From Middle English caban, cabane, from Old French cabane, from Late Latin cabanna.


cefn

cefn m (plural cefnau or cefnoedd or cefnydd)

cefnau (plural)
cefnoedd (plural)
cefnydd (plural)
cefn (mutation mutation-radical)
gefn (mutation mutation-soft)
nghefn (mutation mutation-nasal)
chefn (mutation mutation-aspirate)

From Middle Welsh keuen. Related to Breton kein (“back”), Cornish keyn (“back”), Gaulish Cebenna (“ridge, height”) (whence French Cévennes).

ar gefn

in addition to, as a consequence of, with regard to; at the expense of; on top, upon, up to

cefn lloer

full moon; crescent of the moon, half moon

cefnog

backed, having a back; strong, stout brave

yng nghefn

behind one's back, underhand; following, pursuing

(agriculture) ridge (ploughed land between two parallel furrows)


erw

erwau (plural)
erw (mutation mutation-radical)
herw (mutation prothesis-h)

From Proto-Celtic *arwī (compare Breton erv, Cornish erow), from Proto-Indo-European *h₂erh₃-wo- (“plowable”) (compare Old Irish arbor, Latin arvum).

(obsolete) medieval Welsh unit of surface area equal to 11664 sq. ft. or about ¹⁄₄ acre


paladr

pelydr (plural)
paladr (mutation mutation-radical)
baladr (mutation mutation-soft)
mhaladr (mutation mutation-nasal)
phaladr (mutation mutation-aspirate)

From Proto-Celtic *kʷalatros (compare Old Irish celtair (“spear, spear tip”)).

ceiniog baladr

a fine under medieval Welsh law levied on related male landowners when the immediate kin of a murderer proved incapable of paying galanas; spear penny


lle chwech

lle chwech m (plural llefydd chwech or lleoedd chwech)

llefydd chwech (plural)
lleoedd chwech (plural)
lle chwech (mutation mutation-radical)
le chwech (mutation mutation-soft)

/ˌɬeː ˈχweːχ/

From lle (“place”) + chwech (“six”). One theory is that the chwech refers to "sixpence", cf. English spend a penny, although doubtful as sixpence would have been a large sum at the time. See English slang six to refer to a privy for a possible connection.

(North Wales, euphemistic) WC, toilet, loo, lavvy, john


ysgubor

ysgubor f (plural ysguboriau or ysguborau)

ysguboriau (plural)
ysguborau (plural)
ysgubor (mutation mutation-radical)
hysgubor (mutation prothesis-h)

desc

→ English: skipper (“barn or shed to spend the night in”)

From Middle Welsh yscubawr, from Old Welsh scipaur. By surface analysis, ysgub (“(wheat)sheaf”) + -or (compare Irish scioból).

surf

1979, Get By In Welsh, quoted in They Thought You'd Say This
Beth yw'r ysgubor ar ganol y cae?

What's the barn in the middle of the field?


pâl

Possibly from Proto-Indo-European *kʷel- (“to turn”).


talcen

talcennau (plural)
talcenni (plural)
talcen (mutation mutation-radical)
dalcen (mutation mutation-soft)
nhalcen (mutation mutation-nasal)
thalcen (mutation mutation-aspirate)

From Proto-Celtic *talo-. Cognate with Cornish tal, toal, Breton tal, talbenn.


cyntedd

cy-noun

cyntedd m (plural cynteddau or cynteddoedd)

cynteddau (plural)
cynteddoedd (plural)
cyntedd (mutation mutation-radical)
gyntedd (mutation mutation-soft)
nghyntedd (mutation mutation-nasal)
chyntedd (mutation mutation-aspirate)

From Proto-Celtic *kentusedom, cognate to Old Irish cétad (“chair”); ultimately from the root *sed-.


galwyn

galwyni (plural)
galwyn (mutation mutation-radical)
alwyn (mutation mutation-soft)
ngalwyn (mutation mutation-nasal)


lolfa

From lolian (“to joke, jest, loll”) + -fa, the former perhaps related to English loll.


gwair

From Middle Welsh gweir, from Proto-Brythonic *gweɣr, from Proto-Celtic *wegrom, possibly from Proto-Indo-European *h₂weg- (“increase, enlarge”) via a sense ‘outgrowth’. Cognate with Cornish gora and Old Irish fér (“grass”).


gwair

gwair (mutation mutation-radical)
wair (mutation mutation-soft)
ngwair (mutation mutation-nasal)


cilfach

cilfachau (plural)
cilfach (mutation mutation-radical)
gilfach (mutation mutation-soft)
nghilfach (mutation mutation-nasal)
chilfach (mutation mutation-aspirate)


cleddyf

cleddyfau (plural)
cleddyf (mutation mutation-radical)
gleddyf (mutation mutation-soft)
nghleddyf (mutation mutation-nasal)
chleddyf (mutation mutation-aspirate)

From Middle Welsh cledyf, from Proto-Brythonic *klėðɨβ̃, from Proto-Celtic *kladiwos (compare Old Irish claideb, Breton klezeñv).


amaethyddiaeth

amaethyddiaeth (mutation mutation-radical)
hamaethyddiaeth (mutation prothesis-h)

/ˌameɨ̯ˈθəðjaɨ̯θ/

/ˌameɨ̯ˈθəðjɛθ/

/ˌamei̯ˈθəðjɛθ/


cnwd

cnydau (plural)
cnwd (mutation mutation-radical)
gnwd (mutation mutation-soft)
nghnwd (mutation mutation-nasal)
chnwd (mutation mutation-aspirate)

From Proto-Brythonic *knud, from Proto-Celtic *knutos.


aradr

erydr (plural)
aradr (mutation mutation-radical)
haradr (mutation prothesis-h)

From Middle Welsh aradr, from Old Welsh ara(ter), from Proto-Brythonic *aradr, from Proto-Celtic *aratrom, from Proto-Indo-European *h₂érh₃trom. Cognate with Old Irish arathar, Latin arātrum.

rhoi llaw ar yr aradr

to put one's hand to the plough, to begin an undertaking


cromen

cy-noun

cromen f (plural cromenni or cromennau or cromennydd)

cromenni (plural)
cromennau (plural)
cromennydd (plural)
cromen (mutation mutation-radical)
gromen (mutation mutation-soft)
nghromen (mutation mutation-nasal)
chromen (mutation mutation-aspirate)


bwthyn

bythynnod (plural)
bwthyn (mutation mutation-radical)
fwthyn (mutation mutation-soft)
mwthyn (mutation mutation-nasal)

→ English: bwthyn

From bwth (“hut”) + -yn (“diminutive suffix”). Possibly cognate with Scottish Gaelic bothag, Scots and Scottish English bothy.


canolfan

canolfannau (plural)
canolfan (mutation mutation-radical)
ganolfan (mutation mutation-soft)
nghanolfan (mutation mutation-nasal)
chanolfan (mutation mutation-aspirate)


aredig

cy-verb

aredig (first-person singular present arddaf or aredaf)

arddaf (first-person present singular)
aredaf (first-person present singular)
arddaf (first-person future indicative present singular)
erddi (future indicative present second-person singular)
ardd (future indicative present singular third-person)
arddwn (first-person future indicative plural present)
erddwch (future indicative plural present second-person)
arddant (future indicative plural present third-person)
erddir (future impersonal indicative present)
arddwn (conditional first-person singular)
arddwn (first-person imperfect indicative singular subjunctive)
arddit (conditional second-person singular)
arddit (imperfect indicative second-person singular subjunctive)
arddai (conditional singular third-person)
arddai (imperfect indicative singular subjunctive third-person)
arddem (conditional first-person plural)
arddem (first-person imperfect indicative plural subjunctive)
arddech (conditional plural second-person)
arddech (imperfect indicative plural second-person subjunctive)
arddent (conditional plural third-person)
arddent (imperfect indicative plural subjunctive third-person)
erddid (conditional impersonal)
erddid (imperfect impersonal indicative subjunctive)
erddais (first-person preterite singular)
erddaist (preterite second-person singular)
arddodd (preterite singular third-person)
arddasom (first-person plural preterite)
arddasoch (plural preterite second-person)
arddasant (plural preterite third-person)
arddwyd (impersonal preterite)
arddaswn (first-person pluperfect singular)
arddasit (pluperfect second-person singular)
arddasai (pluperfect singular third-person)
arddasem (first-person pluperfect plural)
arddasech (pluperfect plural second-person)
arddasent (pluperfect plural third-person)
arddasid (impersonal pluperfect)
arddesid (impersonal pluperfect)
arddwyf (first-person present singular subjunctive)
erddych (present second-person singular subjunctive)
arddo (present singular subjunctive third-person)
arddom (first-person plural present subjunctive)
arddoch (plural present second-person subjunctive)
arddont (plural present subjunctive third-person)
ardder (impersonal present subjunctive)
ardd (imperative second-person singular)
ardded (imperative singular third-person)
arddwn (first-person imperative plural)
erddwch (imperative plural second-person)
arddent (imperative plural third-person)
ardder (imperative impersonal)
aredig (noun-from-verb)
arddedig (participle)
arddadwy (participle)
aredaf (first-person future indicative present singular)
aredi (future indicative present second-person singular)
ared (future indicative present singular third-person)
areda (future indicative present singular third-person)
aredwn (first-person future indicative plural present)
aredwch (future indicative plural present second-person)
aredant (future indicative plural present third-person)
aredir (future impersonal indicative present)
aredwn (conditional first-person singular)
aredwn (first-person imperfect indicative singular subjunctive)
aredit (conditional second-person singular)
aredit (imperfect indicative second-person singular subjunctive)
aredai (conditional singular third-person)
aredai (imperfect indicative singular subjunctive third-person)
aredem (conditional first-person plural)
aredem (first-person imperfect indicative plural subjunctive)
aredech (conditional plural second-person)
aredech (imperfect indicative plural second-person subjunctive)
aredent (conditional plural third-person)
aredent (imperfect indicative plural subjunctive third-person)
aredid (conditional impersonal)
aredid (imperfect impersonal indicative subjunctive)
aredais (first-person preterite singular)
aredaist (preterite second-person singular)
aredodd (preterite singular third-person)
aredasom (first-person plural preterite)
aredasoch (plural preterite second-person)
aredasant (plural preterite third-person)
aredwyd (impersonal preterite)
aredaswn (first-person pluperfect singular)
aredasit (pluperfect second-person singular)
aredasai (pluperfect singular third-person)
aredasem (first-person pluperfect plural)
aredasech (pluperfect plural second-person)
aredasent (pluperfect plural third-person)
aredasid (impersonal pluperfect)
aredesid (impersonal pluperfect)
aredwyf (first-person present singular subjunctive)
aredych (present second-person singular subjunctive)
aredo (present singular subjunctive third-person)
aredom (first-person plural present subjunctive)
aredoch (plural present second-person subjunctive)
aredont (plural present subjunctive third-person)
areder (impersonal present subjunctive)
ared (imperative second-person singular)
areda (imperative second-person singular)
areded (imperative singular third-person)
aredwn (first-person imperative plural)
aredwch (imperative plural second-person)
aredent (imperative plural third-person)
areder (imperative impersonal)
aredig (noun-from-verb)
arededig (participle)
aredadwy (participle)
aredig (mutation mutation-radical)
haredig (mutation prothesis-h)

Finite forms built on the stem ardd- are from Proto-Brythonic *ėrðɨd, from Proto-Celtic *aryeti, from Proto-Indo-European *h₂éryeti. The verbal noun is from Middle Welsh eredic (with analogically restored a in the first syllable), from Proto-Brythonic *ėrėdig, from Proto-Celtic *aratīkos, from the root of *aryeti (“to plow”), from *h₂erh₃-.


bwa

bwâu (plural)
bwa (mutation mutation-radical)
fwa (mutation mutation-soft)
mwa (mutation mutation-nasal)


gowt

gowts (plural)
gowt (mutation mutation-radical)
owt (mutation mutation-soft)
ngowt (mutation mutation-nasal)

(agriculture, phytopathology) clubroot, a common disease of cabbages, radishes and turnips


archfarchnad

cy-noun

archfarchnad f (plural archfarchnadoedd or archfarchnadau)

archfarchnadoedd (plural)
archfarchnadau (plural)
archfarchnad (mutation mutation-radical)
harchfarchnad (mutation prothesis-h)


rhannu

cy-verb

rhannu (first-person singular present rhannaf)

rhannaf (first-person present singular)
rhannaf (first-person future indicative present singular)
rhenni (future indicative present second-person singular)
rhanna (future indicative present singular third-person)
rhannwn (first-person future indicative plural present)
rhennwch (future indicative plural present second-person)
rhannwch (future indicative plural present second-person)
rhannant (future indicative plural present third-person)
rhennir (future impersonal indicative present)
rhannwn (conditional first-person singular)
rhannwn (first-person imperfect indicative singular subjunctive)
rhannit (conditional second-person singular)
rhannit (imperfect indicative second-person singular subjunctive)
rhannai (conditional singular third-person)
rhannai (imperfect indicative singular subjunctive third-person)
rhannem (conditional first-person plural)
rhannem (first-person imperfect indicative plural subjunctive)
rhannech (conditional plural second-person)
rhannech (imperfect indicative plural second-person subjunctive)
rhannent (conditional plural third-person)
rhannent (imperfect indicative plural subjunctive third-person)
rhennid (conditional impersonal)
rhennid (imperfect impersonal indicative subjunctive)
rhennais (first-person preterite singular)
rhennaist (preterite second-person singular)
rhannodd (preterite singular third-person)
rhanasom (first-person plural preterite)
rhanasoch (plural preterite second-person)
rhanasant (plural preterite third-person)
rhannwyd (impersonal preterite)
rhanaswn (first-person pluperfect singular)
rhanasit (pluperfect second-person singular)
rhanasai (pluperfect singular third-person)
rhanasem (first-person pluperfect plural)
rhanasech (pluperfect plural second-person)
rhanasent (pluperfect plural third-person)
rhanasid (impersonal pluperfect)
rhanesid (impersonal pluperfect)
rhannwyf (first-person present singular subjunctive)
rhennych (present second-person singular subjunctive)
rhanno (present singular subjunctive third-person)
rhannom (first-person plural present subjunctive)
rhannoch (plural present second-person subjunctive)
rhannont (plural present subjunctive third-person)
rhanner (impersonal present subjunctive)
rhanna (imperative second-person singular)
rhanned (imperative singular third-person)
rhannwn (first-person imperative plural)
rhennwch (imperative plural second-person)
rhannwch (imperative plural second-person)
rhannent (imperative plural third-person)
rhanner (imperative impersonal)
rhannu (noun-from-verb)
rhanedig (participle)
rhanadwy (participle)
rhanna i (first-person future singular)
rhannaf i (first-person future singular)
rhanni di (future second-person singular)
rhannith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
rhanniff e (future singular third-person)
rhannwn ni (first-person future plural)
rhannwch chi (future plural second-person)
rhannan nhw (future plural third-person)
rhannwn i (conditional first-person singular)
rhanswn i (conditional first-person singular)
rhannet ti (conditional second-person singular)
rhanset ti (conditional second-person singular)
rhannai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
rhansai fo (conditional singular third-person)
rhannen ni (conditional first-person plural)
rhansen ni (conditional first-person plural)
rhannech chi (conditional plural second-person)
rhansech chi (conditional plural second-person)
rhannen nhw (conditional plural third-person)
rhansen nhw (conditional plural third-person)
rhannais i (first-person preterite singular)
rhannes i (first-person preterite singular)
rhannaist ti (preterite second-person singular)
rhannest ti (preterite second-person singular)
rhannodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
rhannon ni (first-person plural preterite)
rhannoch chi (plural preterite second-person)
rhannon nhw (plural preterite third-person)
rhanna (imperative second-person singular)
rhannwch (imperative plural second-person)
rhannu (mutation mutation-radical)
rannu (mutation mutation-soft)


tynnu

tynnu (first-person singular present tynnaf)

tynnaf (first-person present singular)
tynnaf (first-person future indicative present singular)
tynni (future indicative present second-person singular)
tyn (future indicative present singular third-person)
tynnwn (first-person future indicative plural present)
tynnwch (future indicative plural present second-person)
tynnant (future indicative plural present third-person)
tynnir (future impersonal indicative present)
tynnwn (conditional first-person singular)
tynnwn (first-person imperfect indicative singular subjunctive)
tynnit (conditional second-person singular)
tynnit (imperfect indicative second-person singular subjunctive)
tynnai (conditional singular third-person)
tynnai (imperfect indicative singular subjunctive third-person)
tynnem (conditional first-person plural)
tynnem (first-person imperfect indicative plural subjunctive)
tynnech (conditional plural second-person)
tynnech (imperfect indicative plural second-person subjunctive)
tynnent (conditional plural third-person)
tynnent (imperfect indicative plural subjunctive third-person)
tynnid (conditional impersonal)
tynnid (imperfect impersonal indicative subjunctive)
tynnais (first-person preterite singular)
tynnaist (preterite second-person singular)
tynnodd (preterite singular third-person)
tynasom (first-person plural preterite)
tynasoch (plural preterite second-person)
tynasant (plural preterite third-person)
tynnwyd (impersonal preterite)
tynaswn (first-person pluperfect singular)
tynasit (pluperfect second-person singular)
tynasai (pluperfect singular third-person)
tynasem (first-person pluperfect plural)
tynasech (pluperfect plural second-person)
tynasent (pluperfect plural third-person)
tynasid (impersonal pluperfect)
tynesid (impersonal pluperfect)
tynnwyf (first-person present singular subjunctive)
tynnych (present second-person singular subjunctive)
tynno (present singular subjunctive third-person)
tynnom (first-person plural present subjunctive)
tynnoch (plural present second-person subjunctive)
tynnont (plural present subjunctive third-person)
tynner (impersonal present subjunctive)
tyn (imperative second-person singular)
tynna (imperative second-person singular)
tynned (imperative singular third-person)
tynnwn (first-person imperative plural)
tynnwch (imperative plural second-person)
tynnent (imperative plural third-person)
tynner (imperative impersonal)
tynnu (noun-from-verb)
tynedig (participle)
tynadwy (participle)
tynna i (first-person future singular)
tynnaf i (first-person future singular)
tynni di (future second-person singular)
tynnith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
tynniff e (future singular third-person)
tynnwn ni (first-person future plural)
tynnwch chi (future plural second-person)
tynnan nhw (future plural third-person)
tynnwn i (conditional first-person singular)
tynswn i (conditional first-person singular)
tynnet ti (conditional second-person singular)
tynset ti (conditional second-person singular)
tynnai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
tynsai fo (conditional singular third-person)
tynnen ni (conditional first-person plural)
tynsen ni (conditional first-person plural)
tynnech chi (conditional plural second-person)
tynsech chi (conditional plural second-person)
tynnen nhw (conditional plural third-person)
tynsen nhw (conditional plural third-person)
tynnais i (first-person preterite singular)
tynnes i (first-person preterite singular)
tynnaist ti (preterite second-person singular)
tynnest ti (preterite second-person singular)
tynnodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
tynnon ni (first-person plural preterite)
tynnoch chi (plural preterite second-person)
tynnon nhw (plural preterite third-person)
tynna (imperative second-person singular)
tynnwch (imperative plural second-person)
tynnu (mutation mutation-radical)
dynnu (mutation mutation-soft)
nhynnu (mutation mutation-nasal)
thynnu (mutation mutation-aspirate)

From Middle Welsh tynnu, from Proto-Brythonic *tɨnnɨd, either from Latin tendō or from a Proto-Celtic cognate of it; either way from Proto-Indo-European *tend- (“stretch, extend”). Cognate with Middle Cornish tenna, tenne, Modern Cornish tedna (“to pull”), Old Breton tinsit (“scattered, strewed”), Middle Breton tennaff, Modern Breton tennañ, Old Irish tendaid (“to press”).


garddwr

cy-noun

garddwr m (plural garddwyr, feminine garddwraig)

garddwyr (plural)
garddwraig (feminine)
garddwr (mutation mutation-radical)
arddwr (mutation mutation-soft)
ngarddwr (mutation mutation-nasal)


cyfair

cyfeiriau (plural)
cyfair (mutation mutation-radical)
gyfair (mutation mutation-soft)
nghyfair (mutation mutation-nasal)
chyfair (mutation mutation-aspirate)


tunnell

tunelli (plural)
tunnell (mutation mutation-radical)
dunnell (mutation mutation-soft)
nhunnell (mutation mutation-nasal)
thunnell (mutation mutation-aspirate)

Borrowed from Middle English tunnele, itself borrowed from Middle French tonnelle.


puteindy

puteindai (plural)
puteindy (mutation mutation-radical)
buteindy (mutation mutation-soft)
mhuteindy (mutation mutation-nasal)
phuteindy (mutation mutation-aspirate)


troedfedd

troedfeddi (plural)
troedfedd (mutation mutation-radical)
droedfedd (mutation mutation-soft)
nhroedfedd (mutation mutation-nasal)
throedfedd (mutation mutation-aspirate)

/ˈtrɔɨ̯dvɛð/


toriad

toriadau (plural)
toriad (mutation mutation-radical)
doriad (mutation mutation-soft)
nhoriad (mutation mutation-nasal)
thoriad (mutation mutation-aspirate)

(dermatology)
(arithmetic, archaic) fraction


cach

cach (mutation mutation-radical)
gach (mutation mutation-soft)
nghach (mutation mutation-nasal)
chach (mutation mutation-aspirate)

From Proto-Brythonic *kax, from Proto-Celtic *kakkos, *kakkā, from a very widespread child-language word for feces.


sliper

sliper f (plural slipers or sliperi or sliperau, diminutive slipren, not mutable)

slipers (plural)
sliperi (plural)
sliperau (plural)
slipren (diminutive)


modfedd

modfedd f (plural modfeddi or modfeddau)

modfeddi (plural)
modfeddau (plural)
modfedd (mutation mutation-radical)
fodfedd (mutation mutation-soft)

(of place, time, material or abstract thing) slightest amount


lluosi

cy-verb

lluosi (first-person singular present lluosaf)

lluosaf (first-person present singular)
lluosaf (first-person future indicative present singular)
lluosi (future indicative present second-person singular)
lluos (future indicative present singular third-person)
lluoswn (first-person future indicative plural present)
lluoswch (future indicative plural present second-person)
lluosant (future indicative plural present third-person)
lluosir (future impersonal indicative present)
lluoswn (conditional first-person singular)
lluoswn (first-person imperfect indicative singular subjunctive)
lluosit (conditional second-person singular)
lluosit (imperfect indicative second-person singular subjunctive)
lluosai (conditional singular third-person)
lluosai (imperfect indicative singular subjunctive third-person)
lluosem (conditional first-person plural)
lluosem (first-person imperfect indicative plural subjunctive)
lluosech (conditional plural second-person)
lluosech (imperfect indicative plural second-person subjunctive)
lluosent (conditional plural third-person)
lluosent (imperfect indicative plural subjunctive third-person)
lluosid (conditional impersonal)
lluosid (imperfect impersonal indicative subjunctive)
lluosais (first-person preterite singular)
lluosaist (preterite second-person singular)
lluosodd (preterite singular third-person)
lluosasom (first-person plural preterite)
lluosasoch (plural preterite second-person)
lluosasant (plural preterite third-person)
lluoswyd (impersonal preterite)
lluosaswn (first-person pluperfect singular)
lluosasit (pluperfect second-person singular)
lluosasai (pluperfect singular third-person)
lluosasem (first-person pluperfect plural)
lluosasech (pluperfect plural second-person)
lluosasent (pluperfect plural third-person)
lluosasid (impersonal pluperfect)
lluosesid (impersonal pluperfect)
lluoswyf (first-person present singular subjunctive)
lluosych (present second-person singular subjunctive)
lluoso (present singular subjunctive third-person)
lluosom (first-person plural present subjunctive)
lluosoch (plural present second-person subjunctive)
lluosont (plural present subjunctive third-person)
lluoser (impersonal present subjunctive)
lluos (imperative second-person singular)
lluosa (imperative second-person singular)
lluosed (imperative singular third-person)
lluoswn (first-person imperative plural)
lluoswch (imperative plural second-person)
lluosent (imperative plural third-person)
lluoser (imperative impersonal)
lluosi (noun-from-verb)
lluosedig (participle)
lluosadwy (participle)
lluosa i (first-person future singular)
lluosaf i (first-person future singular)
lluosi di (future second-person singular)
lluosith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
lluosiff e (future singular third-person)
lluoswn ni (first-person future plural)
lluoswch chi (future plural second-person)
lluosan nhw (future plural third-person)
lluoswn i (conditional first-person singular)
lluosswn i (conditional first-person singular)
lluoset ti (conditional second-person singular)
lluosset ti (conditional second-person singular)
lluosai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
lluossai fo (conditional singular third-person)
lluosen ni (conditional first-person plural)
lluossen ni (conditional first-person plural)
lluosech chi (conditional plural second-person)
lluossech chi (conditional plural second-person)
lluosen nhw (conditional plural third-person)
lluossen nhw (conditional plural third-person)
lluosais i (first-person preterite singular)
lluoses i (first-person preterite singular)
lluosaist ti (preterite second-person singular)
lluosest ti (preterite second-person singular)
lluosodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
lluoson ni (first-person plural preterite)
lluosoch chi (plural preterite second-person)
lluoson nhw (plural preterite third-person)
lluosa (imperative second-person singular)
lluoswch (imperative plural second-person)
lluosi (mutation mutation-radical)
luosi (mutation mutation-soft)


dyrnfedd

dyrnfeddi (plural)
dyrnfedd (mutation mutation-radical)
ddyrnfedd (mutation mutation-soft)
nyrnfedd (mutation mutation-nasal)


ewinfedd

ewinfeddi (plural)
ewinfedd (mutation mutation-radical)
hewinfedd (mutation prothesis-h)

ewin (“fingernail”) + -fedd (“measure, length”)


blwyddyn golau

cy-noun

blwyddyn golau f (plural blynyddoedd golau)

blynyddoedd golau (plural)
blwyddyn golau (mutation mutation-radical)
flwyddyn golau (mutation mutation-soft)
mlwyddyn golau (mutation mutation-nasal)

/ˌblʊɨ̯ðɨ̞n ˈɡɔlaɨ̯/

/ˌblʊɨ̯ðɨ̞n ˈɡɔlɛ/

/ˌblʊɨ̯ðɨ̞n ˈɡɔla/

/ˌblʊi̯ðɪn ˈɡɔlai̯/

/ˌblʊi̯ðɪn ˈɡoːlɛ/

/ˌblʊi̯ðɪn ˈɡɔlɛ/

From blwyddyn (“year”) + golau (“light”).


eiliad

eiliad m or f (plural eiliadau or eiliaid)

eiliadau (plural)
eiliaid (plural)
eiliad (mutation mutation-radical)
heiliad (mutation prothesis-h)


maes awyr

meysydd awyr (plural)
maes awyr (mutation mutation-radical)
faes awyr (mutation mutation-soft)

From maes (“field”) + awyr (“air”), a calque of English airfield.


rhych

rhychau (plural)
rhych (mutation mutation-radical)
rych (mutation mutation-soft)

Ultimately from Proto-Indo-European *perḱ- (“to dig”). Cognate with English furrow and Latin porcus (“pig”).


ffatri

ffatri f (plural ffatrïoedd or ffatrïau, not mutable)


silff

silffoedd (plural)
silff (mutation mutation-radical)


gleuad

gleuad f (collective, singulative gleuaden)

gleuaden (singulative)
gleuad (mutation mutation-radical)
leuad (mutation mutation-soft)
ngleuad (mutation mutation-nasal)

From Proto-Indo-European *ǵʰel- (“to shine”). Cognate with Cornish glos and Breton glawed.


campfa

campfa f (plural campfaoedd or campfeydd)

campfaoedd (plural)
campfeydd (plural)
campfa (mutation mutation-radical)
gampfa (mutation mutation-soft)
nghampfa (mutation mutation-nasal)
champfa (mutation mutation-aspirate)


teml

temlau (plural)
temloedd (plural)
teml (mutation mutation-radical)
deml (mutation mutation-soft)
nheml (mutation mutation-nasal)
theml (mutation mutation-aspirate)

From Middle Welsh temhyl, from Proto-Brythonic *templ, from Latin templum.


trothwy

trothwy m (plural trothwyau or trothwyon)

trothwyau (plural)
trothwyon (plural)
trothwy (mutation mutation-radical)
drothwy (mutation mutation-soft)
nhrothwy (mutation mutation-nasal)
throthwy (mutation mutation-aspirate)


rhiniog

rhiniogau (plural)
rhiniog (mutation mutation-radical)
riniog (mutation mutation-soft)

Rebracketing of yr hiniog, from hin + -iog, from hin (“side, edge, border”).


fflat

fflat m (plural fflatiau or fflats, not mutable)


wy maes

wyau maes (plural)
wy maes (mutation mutation-radical)
hwy maes (mutation prothesis-h)

/ˌuːɨ̯ ˈmaːɨ̯s/


iâr faes

ieir maes (plural)
iâr faes (mutation mutation-radical)
hiâr faes (mutation prothesis-h)


ystafell ymolchi

ystafell ymolchi f (plural ystafelloedd ymolchi)

ystafelloedd ymolchi (plural)
ystafell ymolchi (mutation mutation-radical)
hystafell ymolchi (mutation prothesis-h)


ystafell wely

ystafell wely f (plural ystafelloedd gwely)

ystafelloedd gwely (plural)
ystafell wely (mutation mutation-radical)
hystafell wely (mutation prothesis-h)

Paid â mynd i mewn i fy ystafell wely heb gnocio.

Don't enter my bedroom without knocking.


ystafell fyw

ystafelloed byw (plural)
ystafell fyw (mutation mutation-radical)
hystafell fyw (mutation prothesis-h)


ystafell fwyta

ystafell fwyta f (plural ystafelloed bwyta)

ystafelloed bwyta (plural)
ystafell fwyta (mutation mutation-radical)
hystafell fwyta (mutation prothesis-h)

dining room (room where meals are eaten)


teios

teios (mutation mutation-radical)
deios (mutation mutation-soft)
nheios (mutation mutation-nasal)
theios (mutation mutation-aspirate)

(plural only) little houses, hovels, (expressing small size and sometimes poor quality)


mosg

mosg m (plural mosgiau or mosgau or mosgoedd or mosgiaid)

mosgiau (plural)
mosgau (plural)
mosgoedd (plural)
mosgiaid (plural)
mosg (mutation mutation-radical)
fosg (mutation mutation-soft)

From English mosque, from French mosquée, from Italian moschea, ultimately from Arabic مَسْجِد (masjid, literally “place of prostration”).


cadeirlan

cadeirlannau (plural)
cadeirlan (mutation mutation-radical)
gadeirlan (mutation mutation-soft)
nghadeirlan (mutation mutation-nasal)
chadeirlan (mutation mutation-aspirate)

From cadair (“chair, cathedra”) + llan (“church”).

af

cathedral (principal church of a bishop's diocese)


canolfan iechyd

cy-noun

canolfan iechyd f (plural canolfannau iechyd)

canolfannau iechyd (plural)
canolfan iechyd (mutation mutation-radical)
ganolfan iechyd (mutation mutation-soft)
nghanolfan iechyd (mutation mutation-nasal)
chanolfan iechyd (mutation mutation-aspirate)


stiwdio

stiwdio f (plural stiwdios or stiwdioau, not mutable)

From English studio, from Italian studio, from Latin studium. Doublet of stydi.

studio (place where radio or television programs, records or films are made; establishment where an art is taught; artist’s or photographer’s workshop)


byngalo

byngalos (plural)
byngalo (mutation mutation-radical)
fyngalo (mutation mutation-soft)
myngalo (mutation mutation-nasal)

From English bungalow, from Hindustani बंगला (baṅglā) / بَن٘گْلَہ (banglā), referring to the Bengali-style house.


rhandy

rhandai (plural)
rhandy (mutation mutation-radical)
randy (mutation mutation-soft)

From rhan (“share, part”) + tŷ (“house”).


labordy

labordy m (plural labordai, not mutable)

From English labor(atory) + tŷ (“house”).


lluosogi

cy-verb

lluosogi (first-person singular present lluosogaf)

lluosogaf (first-person present singular)
lluosogaf (first-person future indicative present singular)
lluosogi (future indicative present second-person singular)
lluosog (future indicative present singular third-person)
lluosoga (future indicative present singular third-person)
lluosogwn (first-person future indicative plural present)
lluosogwch (future indicative plural present second-person)
lluosogant (future indicative plural present third-person)
lluosogir (future impersonal indicative present)
lluosogwn (conditional first-person singular)
lluosogwn (first-person imperfect indicative singular subjunctive)
lluosogit (conditional second-person singular)
lluosogit (imperfect indicative second-person singular subjunctive)
lluosogai (conditional singular third-person)
lluosogai (imperfect indicative singular subjunctive third-person)
lluosogem (conditional first-person plural)
lluosogem (first-person imperfect indicative plural subjunctive)
lluosogech (conditional plural second-person)
lluosogech (imperfect indicative plural second-person subjunctive)
lluosogent (conditional plural third-person)
lluosogent (imperfect indicative plural subjunctive third-person)
lluosogid (conditional impersonal)
lluosogid (imperfect impersonal indicative subjunctive)
lluosogais (first-person preterite singular)
lluosogaist (preterite second-person singular)
lluosogodd (preterite singular third-person)
lluosogasom (first-person plural preterite)
lluosogasoch (plural preterite second-person)
lluosogasant (plural preterite third-person)
lluosogwyd (impersonal preterite)
lluosogaswn (first-person pluperfect singular)
lluosogasit (pluperfect second-person singular)
lluosogasai (pluperfect singular third-person)
lluosogasem (first-person pluperfect plural)
lluosogasech (pluperfect plural second-person)
lluosogasent (pluperfect plural third-person)
lluosogasid (impersonal pluperfect)
lluosogesid (impersonal pluperfect)
lluosogwyf (first-person present singular subjunctive)
lluosogych (present second-person singular subjunctive)
lluosogo (present singular subjunctive third-person)
lluosogom (first-person plural present subjunctive)
lluosogoch (plural present second-person subjunctive)
lluosogont (plural present subjunctive third-person)
lluosoger (impersonal present subjunctive)
lluosog (imperative second-person singular)
lluosoga (imperative second-person singular)
lluosoged (imperative singular third-person)
lluosogwn (first-person imperative plural)
lluosogwch (imperative plural second-person)
lluosogent (imperative plural third-person)
lluosoger (imperative impersonal)
lluosogi (noun-from-verb)
lluosogedig (participle)
lluosogadwy (participle)
lluosoga i (first-person future singular)
lluosogaf i (first-person future singular)
lluosogi di (future second-person singular)
lluosogith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
lluosogiff e (future singular third-person)
lluosogwn ni (first-person future plural)
lluosogwch chi (future plural second-person)
lluosogan nhw (future plural third-person)
lluosogwn i (conditional first-person singular)
lluosogswn i (conditional first-person singular)
lluosoget ti (conditional second-person singular)
lluosogset ti (conditional second-person singular)
lluosogai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
lluosogsai fo (conditional singular third-person)
lluosogen ni (conditional first-person plural)
lluosogsen ni (conditional first-person plural)
lluosogech chi (conditional plural second-person)
lluosogsech chi (conditional plural second-person)
lluosogen nhw (conditional plural third-person)
lluosogsen nhw (conditional plural third-person)
lluosogais i (first-person preterite singular)
lluosoges i (first-person preterite singular)
lluosogaist ti (preterite second-person singular)
lluosogest ti (preterite second-person singular)
lluosogodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
lluosogon ni (first-person plural preterite)
lluosogoch chi (plural preterite second-person)
lluosogon nhw (plural preterite third-person)
lluosoga (imperative second-person singular)
lluosogwch (imperative plural second-person)
lluosogi (mutation mutation-radical)
luosogi (mutation mutation-soft)

/ɬɨ̞.ɔˈsɔɡɪ/

From Middle Welsh lluossogi. By surface analysis, lluosog + -i.


plasty

plastai (plural)
plasty (mutation mutation-radical)
blasty (mutation mutation-soft)
mhlasty (mutation mutation-nasal)
phlasty (mutation mutation-aspirate)


maenordy

maenordai (plural)
maenordy (mutation mutation-radical)
faenordy (mutation mutation-soft)


brodordy

brodordai (plural)
brodordy (mutation mutation-radical)
frodordy (mutation mutation-soft)
mrodordy (mutation mutation-nasal)

From brodor, brodyr (“brothers; friars”) + tŷ (“house”).


anwythydd

anwythyddion (plural)
anwythydd (mutation mutation-radical)
hanwythydd (mutation prothesis-h)

/aˈnʊɨ̯θɨ̞ð/

From anwytho (“to induce; to induct”) + -ydd.

electrical engineering
electrical engineering


newidydd

cy-noun

newidydd m (plural newidyddion, not mutable)

From newid (“to change, to transform”) + -ydd (“-er”).

af

(physics, electrical engineering) transformer


silweirio

cy-verb

silweirio (first-person singular present silweiriaf, not mutable)

silweiriaf (first-person present singular)
silweiriaf (first-person future indicative present singular)
silweiri (future indicative present second-person singular)
silweiria (future indicative present singular third-person)
silweiriwn (first-person future indicative plural present)
silweiriwch (future indicative plural present second-person)
silweiriant (future indicative plural present third-person)
silweirir (future impersonal indicative present)
silweiriwn (conditional first-person singular)
silweiriwn (first-person imperfect indicative singular)
silweirit (conditional second-person singular)
silweirit (imperfect indicative second-person singular)
silweiriai (conditional singular third-person)
silweiriai (imperfect indicative singular third-person)
silweiriem (conditional first-person plural)
silweiriem (first-person imperfect indicative plural)
silweiriech (conditional plural second-person)
silweiriech (imperfect indicative plural second-person)
silweirient (conditional plural third-person)
silweirient (imperfect indicative plural third-person)
silweirid (conditional impersonal)
silweirid (imperfect impersonal indicative)
silweiriais (first-person preterite singular)
silweiriaist (preterite second-person singular)
silweiriodd (preterite singular third-person)
silweiriasom (first-person plural preterite)
silweiriasoch (plural preterite second-person)
silweiriasant (plural preterite third-person)
silweiriwyd (impersonal preterite)
silweiriaswn (first-person pluperfect singular)
silweiriasit (pluperfect second-person singular)
silweiriasai (pluperfect singular third-person)
silweiriasem (first-person pluperfect plural)
silweiriasech (pluperfect plural second-person)
silweiriasent (pluperfect plural third-person)
silweiriasid (impersonal pluperfect)
silweiriesid (impersonal pluperfect)
silweiriwyf (first-person present singular subjunctive)
silweiriech (present second-person singular subjunctive)
silweirio (present singular subjunctive third-person)
silweiriom (first-person plural present subjunctive)
silweirioch (plural present second-person subjunctive)
silweiriont (plural present subjunctive third-person)
silweirier (impersonal present subjunctive)
silweiria (imperative second-person singular)
silweiried (imperative singular third-person)
silweiriwn (first-person imperative plural)
silweiriwch (imperative plural second-person)
silweirient (imperative plural third-person)
silweirier (imperative impersonal)
silweirio (noun-from-verb)
silweiriedig (participle)
silweiriadwy (participle)
silweiria i (first-person future singular)
silweiriaf i (first-person future singular)
silweiri di (future second-person singular)
silweirith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
silweiriff e (future singular third-person)
silweiriwn ni (first-person future plural)
silweiriwch chi (future plural second-person)
silweirian nhw (future plural third-person)
silweiriwn i (conditional first-person singular)
silweirswn i (conditional first-person singular)
silweiriet ti (conditional second-person singular)
silweirset ti (conditional second-person singular)
silweiriai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
silweirsai fo (conditional singular third-person)
silweirien ni (conditional first-person plural)
silweirsen ni (conditional first-person plural)
silweiriech chi (conditional plural second-person)
silweirsech chi (conditional plural second-person)
silweirien nhw (conditional plural third-person)
silweirsen nhw (conditional plural third-person)
silweiriais i (first-person preterite singular)
silweiries i (first-person preterite singular)
silweiriaist ti (preterite second-person singular)
silweiriest ti (preterite second-person singular)
silweiriodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
silweirion ni (first-person plural preterite)
silweirioch chi (plural preterite second-person)
silweirion nhw (plural preterite third-person)
silweiria (imperative second-person singular)
silweiriwch (imperative plural second-person)


swyddfa bost

cy-noun

swyddfa bost f (plural swyddfeydd post, not mutable)


llythyrdy

llythyrtai (plural)
llythyrdy (mutation mutation-radical)
lythyrdy (mutation mutation-soft)


megaffon

megaffonau (plural)
megaffon (mutation mutation-radical)
fegaffon (mutation mutation-soft)

Partial calque of English megaphone. Equivalent to mega- + ffôn.


glasfyfyriwr

glasfyfyriwr m (plural glasfyfyrwyr, feminine glasfyfyrwraig)

glasfyfyrwyr (plural)
glasfyfyrwraig (feminine)
glasfyfyriwr (mutation mutation-radical)
lasfyfyriwr (mutation mutation-soft)
nglasfyfyriwr (mutation mutation-nasal)

From glas (“green”) + myfyriwr (“student”).


namyn

yn (particle) + amwyn (“to seize, to take away”), from Proto-Celtic *ambi- + *wīkā.


trefolaeth

trefolaeth (mutation mutation-radical)
drefolaeth (mutation mutation-soft)
nhrefolaeth (mutation mutation-nasal)
threfolaeth (mutation mutation-aspirate)

(urban studies) urbanism (study of cities)


traphont

traphontydd (plural)
traphont (mutation mutation-radical)
draphont (mutation mutation-soft)
nhraphont (mutation mutation-nasal)
thraphont (mutation mutation-aspirate)


sgrin wynt

cy-noun

sgrin wynt f (plural sgriniau gwynt, not mutable)


swch

swch m or f (plural sychau or swchau or sychod, not mutable)

sychau (plural)
swchau (plural)
sychod (plural)

From Proto-Celtic *sukkos, from Proto-Indo-European *sū- (“pig”). Doublet of hwch “sow”.


godre

godreon (plural)
godre (mutation mutation-radical)
odre (mutation mutation-soft)
ngodre (mutation mutation-nasal)

codi godre rhywun

to embarrass someone; to lift someone's skirt

(in the plural, urban studies) outskirts


ffenestr godi

ffenestr godi f (plural ffenestri codi, not mutable)


pillffon

From pill (“trunk, pole”) + ffon (“stick, lance”).


buarth

buarthau (plural)
buarth (mutation mutation-radical)
fuarth (mutation mutation-soft)
muarth (mutation mutation-nasal)

From Proto-Celtic *bougortos. Related to buwch (“cow”) and garth (“enclosure”).


uwtffon

From uwd (“porridge”) + ffon (“stick, lance”).


crychiad

crychiadau (plural)
crychiad (mutation mutation-radical)
grychiad (mutation mutation-soft)
nghrychiad (mutation mutation-nasal)
chrychiad (mutation mutation-aspirate)

(agriculture, phytopathology) curl, plant disease that causes leaves to shrivel, esp. potato leafroll virus


cwr

cyrion (plural)
cyrrau (plural)
cwr (mutation mutation-radical)
gwr (mutation mutation-soft)
nghwr (mutation mutation-nasal)
chwr (mutation mutation-aspirate)

From Proto-Celtic *kurros (“pointed, angled”), possibly ultimately from Proto-Indo-European *(s)ker- (“bend, curve”), if the development were similar to *kew-ro- >> *ku-ro- >> Proto-Celtic *kur-so- >> *kurros (“pointed, angled”); see also Latin curvus. Cognate with Irish corr (“point, edge”).

der

(in the plural) margins, limits
(urban studies) outskirts


cofadeilad

cofadeiladau (plural)
cofadeilad (mutation mutation-radical)
gofadeilad (mutation mutation-soft)
nghofadeilad (mutation mutation-nasal)
chofadeilad (mutation mutation-aspirate)

cof (“memory”) + adeilad (“building, structure”).


bwth

bythod (plural)
bythau (plural)
bwth (mutation mutation-radical)
fwth (mutation mutation-soft)
mwth (mutation mutation-nasal)

a cabin, booth, cottage, shed, hut, outhouse, shack


arsyllfa

cy-noun

arsyllfa f (plural arsyllfaoedd or arsyllfeydd)

arsyllfaoedd (plural)
arsyllfeydd (plural)
arsyllfa (mutation mutation-radical)
harsyllfa (mutation prothesis-h)


ardir

ardir (mutation mutation-radical)
hardir (mutation prothesis-h)

âr (“arable land, tillage”) + tir (“land”).


âr

arau (plural)
âr (mutation mutation-radical)
hâr (mutation prothesis-h)

From Proto-Indo-European *h₂erh₃- (“to plough”).

inh

(agriculture) tillage, cultivation of arable land


ffracsiwn degol

cy-noun

ffracsiwn degol m (plural ffracsiynau degol or ffracsiynau degolion, not mutable)

ffracsiynau degol (plural)
ffracsiynau degolion (plural)


degymol

cy-adj

degymol (feminine singular degymol, plural degymolion, not comparable)

degymol (feminine singular)
degymolion (plural)
degymol (mutation mutation-radical)
ddegymol (mutation mutation-soft)
negymol (mutation mutation-nasal)


ffracsiwn

cy-noun

ffracsiwn m (plural ffracsiynau, not mutable)


degolyn

degolion (plural)
degolyn (mutation mutation-radical)
ddegolyn (mutation mutation-soft)
negolyn (mutation mutation-nasal)


ffracsiwn degymol

ffracsiwn degymol m (plural ffracsiynau degymol or ffracsiynau degymolion, not mutable)

ffracsiynau degymol (plural)
ffracsiynau degymolion (plural)


degol

cy-adj

degol (feminine singular degol, plural degolion, not comparable)

degol (feminine singular)
degolion (plural)


degol

degolion (plural)
degol (mutation mutation-radical)
ddegol (mutation mutation-soft)
negol (mutation mutation-nasal)


arnodd

arnoddau (plural)
arnodd (mutation mutation-radical)
harnodd (mutation prothesis-h)


haeddel fach

cy-noun

haeddel fach f (plural haeddeli bach, not mutable)

haeddel (“plough-handle”) + bach (“small, little”).

(agriculture) ploughstaff, (lesser handle of a plough)


cwlltwr

cylltyrau (plural)
cwlltwr (mutation mutation-radical)
gwlltwr (mutation mutation-soft)
nghwlltwr (mutation mutation-nasal)
chwlltwr (mutation mutation-aspirate)

(agriculture) coulter (part of a plough)


haeddel

haeddel f (plural haeddeli or haeddeliau or haeddelion, not mutable)

haeddeli (plural)
haeddeliau (plural)
haeddelion (plural)

Inherited from Proto-Indo-European *seǵʰ- (“to grasp”). Cognate with Breton hael.


haeddel fawr

haeddel fawr f (plural haeddeli mawr, not mutable)

haeddel (“plough-handle”) + mawr (“big, great”).

(agriculture) ploughtail, master-handle of a plough


bylchog

cy-adj

bylchog (feminine singular bylchog, plural bylchog, equative mor fylchog, comparative mwy bylchog, superlative mwyaf bylchog)

bylchog (feminine singular)
bylchog (plural)
mor fylchog (equative)
mwy bylchog (comparative)
mwyaf bylchog (superlative)
bylchog (mutation mutation-radical)
fylchog (mutation mutation-soft)
mylchog (mutation mutation-nasal)

(architecture) crenellated, having battlements


fowt

From Middle Welsh uot, from Middle English vaute, from Old French volte, from Latin voluta.


amaethydd

cy-noun

amaethydd m or f by sense (plural amaethyddion or amaethwyr)

amaethyddion (plural)
amaethwyr (plural)
amaethydd (mutation mutation-radical)
hamaethydd (mutation prothesis-h)

From amaethu (“cultivate, farm”) + -ydd.