pen

From Middle Welsh and Old Welsh penn, from Proto-Brythonic *penn, from Proto-Celtic *kʷennom.

gobennu

to terminate, to accent on the penultimate syllable


nod

cy-noun

nod m (plural nodau or nodion, not mutable)

Borrowed from English node, from Latin nōdus.


colomen

colomennod (plural)
colomen
golomen (soft)
ngholomen
cholomen

From Middle Welsh colomen, from Proto-Brythonic *kolom (from Latin columba) + -en.


elin

elinoedd (plural)
elinau (plural)
elin
helin (prothesis-h)

From Middle Welsh elin, from Old Welsh elin, Proto-Brythonic *ölin, from from Proto-Celtic *olīnā (“elbow; angle”), from Proto-Indo-European *Heh₃l- (“to bend”).
Cognates
Cognate with Cornish elin, Breton ilin, Scottish Gaelic uileann, Irish uillinn; non-Celtic cognates include Old English eln(bōga), Latin ulna, Ancient Greek ὠλένη (ōlénē).


cen

cennau (plural)
cen
gen (soft)
nghen
chen

From Proto-Celtic *kennos (“skin”) (compare Cornish kenn (“film, skin (on liquid); peel”), Breton kenn (“scurf, dandruff”), Old Irish cenn (“covering”)), from Proto-Indo-European *sken- (“to split off”) (compare German schinden (“to strip, peel; skin”)); further to Cornish skans (“fish scales”), Breton skant (“fish scales”), Irish scain (“to tear, burst”).


cala

caliau (plural)
cala
gala (soft)
nghala
chala

From Proto-Celtic *kalgā. Cognate with Cornish kal, kalgh; Breton kalc'h.


bron

From Middle Welsh bronn, from Proto-Brythonic *bronn, from Proto-Celtic *brusū (“belly”).

Cariad mam sy dan fy mron

Mae bronnau ardderchog gyda hi. (South)

1979, Heini Gruffudd, Look Up The Welsh: A Welsh Phrase Book, Y Lolfa Press


croen

cy-noun

croen m (usually uncountable, plural crwyn)

crwyn (plural)
croen
groen (soft)
nghroen
chroen

From Old Welsh groen, from Proto-Brythonic *krʉn, from Proto-Celtic *kroknom, syncope of *krokkenom (compare Cornish kroghen, Breton kroc'hen, Old Irish croiccenn), of unknown origin. Perhaps ultimately from Proto-Indo-European *(s)ker- (“cut off”), although this gave corwg and ysgaru.


ais

eisen (singulative)
ais
hais (prothesis-h)

From Middle Welsh eis, from early Proto-Brythonic *assī, a plural derived secondarily from Proto-Celtic *ast, from pre-Celtic *h₂est, from Proto-Indo-European *h₃ésth₁ (“bone”) (compare Irish easna, Latin os, Albanian asht). Doublet of asen; related to asgwrn.


rhefr

From Proto-Celtic *remros (“great, fat, thick”) (compare Breton reor (“backside, rump”), Irish ramhar (“thick, plump”)).


calon

calonnau (plural)
calon
galon (soft)
nghalon
chalon

From Middle Welsh callon, from Proto-Brythonic *kalwon, from Proto-Celtic *kalwond- (“heart”). Cognate with Breton kalon.

(anatomy) heart
core (of apple, cabbage, etc.)

(anatomy) heart
center, inner or hidden part


caill

ceilliau (plural)
caill
gaill (soft)
nghaill
chaill

From Middle Welsh keill, from Proto-Brythonic *köll (compare Breton and Cornish kell), from Latin coleus, from Ancient Greek κολεός (koleós).


bys

From Middle Welsh bys, from Proto-Celtic *bistis (finger).


blas

From Middle Welsh blas, from Proto-Brythonic *blas, from Proto-Celtic *mlasto-, ultimately from Proto-Indo-European *mel-s- (“to try, taste”). Cognate with Cornish blas, Breton blaz, Irish blas; outside of Celtic, compare Russian молса́ть (molsátʹ, “to suck”).


gamet

gametau (plural)
gamet
amet (soft)
ngamet

English gamete, from Ancient Greek γαμέτης (gamétēs, “spouse”)


dant

cy-noun

dant m (plural dannedd or daint or danheddau)

dannedd (plural)
daint (plural)
danheddau (plural)
dant
ddant (soft)
nant

From Middle Welsh dant, from Proto-Brythonic *dant, from Proto-Celtic *dant, from Proto-Indo-European *h₃dónts.


oesoffagws

oesoffagi (plural)
oesoffagws
hoesoffagws (prothesis-h)


trwyn

trwynau (plural)
trwyn
drwyn (soft)
nhrwyn
thrwyn

From Proto-Celtic *trognī- (“nose”), with further origin uncertain; perhaps related to ffroen (“nostril”). Cognate with Cornish troen, Breton stroen, and also with French trogne via Gaulish trugna (“nose, snout”).


ymennydd

ymenyddiau (plural)
ymennydd
hymennydd (prothesis-h)

From Proto-Celtic *en-kʷennio-, corresponding to yn (“in”) + pen (“head”). Cognate with Breton empenn, Irish inchinn.


taflod

taflodydd (plural)
taflodau (plural)
taflod
daflod (soft)
nhaflod
thaflod


coes

coes f or m (plural coesau, diminutive coesen or coesyn)

coesau (plural)
coesen (diminutive)
coesyn (diminutive)
coes
goes (soft)
nghoes
choes

From Middle Welsh coes, probably from Proto-Brythonic *koɨs, from Proto-Celtic *koxsā, ultimately from Proto-Indo-European *koḱs-. Cognate with Old Irish cos (“leg”) and Latin coxa (“hip”).


poeth

cy-adj

poeth (feminine singular poeth, plural poethion, equative poethed, comparative poethach, superlative poethaf)

poeth (feminine singular)
poethion (plural)
poethed (equative)
poethach (comparative)
poethaf (superlative)
poeth
boeth (soft)
mhoeth
phoeth

From Proto-Brythonic *poɨθ, from Proto-Celtic *kʷoxtos (“cooked”), from Proto-Indo-European *pekʷ- (“to cook”). Doublet of coeth.

tinboeth

lecherous; water pepper plant; some bird species


oddf

oddfau (plural)
oddf
hoddf (prothesis-h)

From Proto-Celtic *odbos (“knot, bulge”); compare Old Irish odb.

(medicine) excrescence, callus, hard growth or swelling


gwialen

cy-noun

gwialen f (plural gwialenni or gwialennod)

gwialenni (plural)
gwialennod (plural)
gwialen
wialen (soft)
ngwialen


gïau

gïau m (collective, singulative giewyn or gewyn)

giewyn (singulative)
gewyn (singulative)
gïau
ïau (soft)
ngïau

From Middle Welsh gieu, from Proto-Brythonic *giow, plural of *gi.


ysgwydd

ysgwyddau (plural)
ysgwydd
hysgwydd (prothesis-h)

From Proto-Brythonic *skuɨð, from Proto-Celtic *skeidā.


gwaedlif

gwaedlif m (plural gwaedlifau or gwaedlifoedd)

gwaedlifau (plural)
gwaedlifoedd (plural)
gwaedlif
waedlif (soft)
ngwaedlif


gwddwg

gyddygau (plural)
gwddwg
wddwg (soft)
ngwddwg


gwddw

gyddfau (plural)
gwddw
wddw (soft)
ngwddw


gwaedlyn

gwaed (“blood”) + llyn (“fluid, humour”)


clust

clustiau (plural)
clust
glust (soft)
nghlust
chlust

From Proto-Brythonic *klʉst, from Proto-Celtic *kloustā, from Proto-Indo-European *ḱlew-.


mwnwgl

From Middle Welsh mwnwgyl, from Proto-Brythonic *munugl, alteration of Proto-Celtic *moniklos, cognate with Old Irish muinél, derived from Proto-Celtic *monis (from which Old Irish muin (“neck, nape”) and Welsh mŵn (“neck”)), from Proto-Indo-European *mon-i- (“neck”). Related to Sanskrit मन्या (mányā-, “neck”), Latin monīle (“necklace”), and English mane. Perhaps ultimately from Proto-Indo-European *men- (“to stand out”).


pen-lin

pen-liniau (plural)
pen-lin
ben-lin (soft)
mhen-lin
phen-lin


rheolydd calon

cy-noun

rheolydd calon m (plural rheolwyr calon or rheolyddion calon)

rheolwyr calon (plural)
rheolyddion calon (plural)
rheolydd calon
reolydd calon (soft)


cefn

cefn m (plural cefnau or cefnoedd or cefnydd)

cefnau (plural)
cefnoedd (plural)
cefnydd (plural)
cefn
gefn (soft)
nghefn
chefn

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

(anatomy) back, rear
(figuratively) back, support


penelin

penelinoedd (plural)
penelin
benelin (soft)
mhenelin
phenelin

From pen (“end (of), head (of)”) + elin (“elbow, forearm”).


talcen

talcennau (plural)
talcenni (plural)
talcen
dalcen (soft)
nhalcen
thalcen

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


bys troed

cy-noun

bys troed m (plural bysedd traed or bysedd troed)

bysedd traed (plural)
bysedd troed (plural)
bys troed
fys troed (soft)
mys troed

bys

when not specified in contradistinction with a finger

(anatomy) toe (when specified in contradistinction with a finger)


llaid

From Proto-Brythonic *llėd, from Proto-Celtic *latyos (“moist”), from Proto-Indo-European *lat- (“damp, wet”), see also Old Norse leðja (“mud”), Albanian lag (“to moisten”). Cognate with Cornish leys.

(veterinary medicine) mud fever, foot rot


gwisg

gwisgoedd (plural)
gwisg
wisg (soft)
ngwisg

From Proto-Brythonic *gwesk, from Proto-Celtic *weskā, itself from Proto-Indo-European *wes- (“to dress, clothe”).
Cognate with Latin vestis, English wear, Old Armenian զգեստ (zgest), Gothic 𐍅𐌰𐍃𐍄𐌹 (wasti), Tocharian B wastsi, and Ancient Greek εἷμα (heîma, “garment”).
In Celtic, compare Old Cornish guisc, Breton gwisk.


ceillgwd

ceillgydau (plural)
ceillgwd
geillgwd (soft)
ngheillgwd
cheillgwd

From caill (“testicle”) + cwd (“sac, pouch”).


pidyn

pidynnau (plural)
pidyn
bidyn (soft)
mhidyn
phidyn


cwd

cy-noun

cwd m (plural cydau, diminutive cwdyn or cydyn)

cydau (plural)
cwdyn (diminutive)
cydyn (diminutive)
cwd
gwd (soft)
nghwd
chwd

If not borrowed from Latin cutis (“skin”), cwd is the sole surviving Celtic reflex (via Proto-Brythonic *kud, from Proto-Celtic *kutis) of Proto-Indo-European *kuH-ti-, which is composed of the root *kew(H)- (zero-grade without s-mobile form of *(s)kewH- (“to cover”)) + *-tis (a deverbal abstract noun suffix). In addition to Latin cutis, cognate with Lithuanian kutỹs (“purse”), Old English hȳd (modern English hide (noun)).

suf

zero-grade without s-mobile form of <i class="Latn mention" lang="ine-pro">*(s)kewH-</i> (“to cover”)

(anatomy) scrotum, cod; any bag-like cavity or organ in body, sac


cyswllt

cy-noun

cyswllt m (plural cysylltau or cysylltiau)

From Middle Welsh kysswllt, from Proto-Brythonic *kusulld, from Vulgar Latin *cōnsoldus, cōnsolidus; cf. Latin cōnsolidō.


niwlen

niwlen f (plural niwlennau, not mutable)

(pathology) cataract (opacity of the lens in the eye)


gân

Probably borrowed from English gan (“the mouth”).


cynffon

cynffon f (plural cynffonnau or cynffonion)

cynffonnau (plural)
cynffonion (plural)
cynffon
gynffon (soft)
nghynffon
chynffon

cynffonna

to wag the tail, to fawn, to suck up to (someone)


gwain

gweiniau (plural)
gwain
wain (soft)
ngwain

From Middle Welsh gwein, from Proto-Brythonic *gwėɣin, from Latin vāgīna. Cognate with Breton gouin, Cornish gweyn.


croth

crothau (plural)
croth
groth (soft)
nghroth
chroth


cymal

cymalau (plural)
cymal
gymal (soft)
nghymal
chymal


cledr

head

cledr f or f pl (singulative cledren, plural cledrau)

cledren (singulative)
cledrau (plural)
cledr
gledr (soft)
nghledr
chledr

From Proto-Celtic *kli-trā, from Proto-Indo-European *ḱlíto (“post, trimmed log”), ultimately related to *ḱley- (“to lean”); see also Old Norse hlíð (“slope”), Welsh clwyd (“gate, hurdle”), Lithuanian šlìtė (“ladder”), pã-šlitas (“curved”). Celtic cognates include Middle Breton clezr, Middle Irish clithar, clethar (“shelter, covert, fastness; protection”).


arddwrn

arddyrnau (plural)
arddwrn
harddwrn (prothesis-h)

Univerbation of ar + dwrn (“hand, fist”). Cognate with Breton arzorn.


tagell

cy-noun

tagell f (plural tagellau or tagelli or tegyll)

tagellau (plural)
tagelli (plural)
tegyll (plural)
tagell
dagell (soft)
nhagell
thagell

From tag (“choking, strangulation”) + -ell.


sawdl

sawdl m or f (plural sodlau, not mutable)

From Middle Welsh saudel, from Proto-Brythonic [Term?], from Proto-Celtic *stātlā or *stādlā (“heel”), from Proto-Indo-European *stéh₂tleh₂ or *stéh₂dʰleh₂ (“that which is used for standing”) respectively, from the root *steh₂- (“to stand”) + *-tleh₂/*-dʰleh₂ (instrument noun suffix). Cognate with Cornish seudhel, Middle Breton seuzl, Irish sáil, Scottish Gaelic sàil and Manx saayl.


cesail

ceseiliau (plural)
cesail
gesail (soft)
nghesail
chesail


pigwrn

pigyrnau (plural)
pigwrn
bigwrn (soft)
mhigwrn
phigwrn


pwd

(veterinary medicine, with definite article) various diseases of livestock including:


parddu

(phytopathology) smut (fungi in the class Ustilaginomycetes and the diseases that they cause in plants)


troedwst

troedwst
droedwst (soft)
nhroedwst
throedwst


llid yr amrant

llid yr amrant m (plural llidiau'r amrant)

llidiau'r amrant (plural)
llid yr amrant
lid yr amrant (soft)

From llid (“inflammation, irritation”) + amrant (“eyelid”).


gowt

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


ffêr

From Proto-Brythonic *fer, from Proto-Celtic *sɸerā.


llost

From Middle Welsh llost, from Proto-Brythonic *llost, from Proto-Celtic *lustā, from the Proto-Indo-European root *lew- (“todivide, to split”), possibly related to Old Norse ljósta (“to strike”). Cognate with Breton lost, Cornish lost, Gaulish losto-,


arloesi

cy-verb

arloesi (first-person singular present arloesaf)

arloesaf (first-person present singular)
arloesaf (first-person future indicative present singular)
arloesi (future indicative present second-person singular)
arloesa (future indicative present singular third-person)
arloeswn (first-person future indicative plural present)
arloeswch (future indicative plural present second-person)
arloesant (future indicative plural present third-person)
arloesir (future impersonal indicative present)
arloeswn (conditional first-person singular)
arloeswn (first-person imperfect indicative singular subjunctive)
arloesit (conditional second-person singular)
arloesit (imperfect indicative second-person singular subjunctive)
arloesai (conditional singular third-person)
arloesai (imperfect indicative singular subjunctive third-person)
arloesem (conditional first-person plural)
arloesem (first-person imperfect indicative plural subjunctive)
arloesech (conditional plural second-person)
arloesech (imperfect indicative plural second-person subjunctive)
arloesent (conditional plural third-person)
arloesent (imperfect indicative plural subjunctive third-person)
arloesid (conditional impersonal)
arloesid (imperfect impersonal indicative subjunctive)
arloesais (first-person preterite singular)
arloesaist (preterite second-person singular)
arloesodd (preterite singular third-person)
arloesasom (first-person plural preterite)
arloesasoch (plural preterite second-person)
arloesasant (plural preterite third-person)
arloeswyd (impersonal preterite)
arloesaswn (first-person pluperfect singular)
arloesasit (pluperfect second-person singular)
arloesasai (pluperfect singular third-person)
arloesasem (first-person pluperfect plural)
arloesasech (pluperfect plural second-person)
arloesasent (pluperfect plural third-person)
arloesasid (impersonal pluperfect)
arloesesid (impersonal pluperfect)
arloeswyf (first-person present singular subjunctive)
arloesych (present second-person singular subjunctive)
arloeso (present singular subjunctive third-person)
arloesom (first-person plural present subjunctive)
arloesoch (plural present second-person subjunctive)
arloesont (plural present subjunctive third-person)
arloeser (impersonal present subjunctive)
arloesa (imperative second-person singular)
arloesed (imperative singular third-person)
arloeswn (first-person imperative plural)
arloeswch (imperative plural second-person)
arloesent (imperative plural third-person)
arloeser (imperative impersonal)
arloesi (noun-from-verb)
arloesedig (participle)
arloesadwy (participle)
arloesa i (first-person future singular)
arloesaf i (first-person future singular)
arloesi di (future second-person singular)
arloesith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
arloesiff e (future singular third-person)
arloeswn ni (first-person future plural)
arloeswch chi (future plural second-person)
arloesan nhw (future plural third-person)
arloeswn i (conditional first-person singular)
arloesswn i (conditional first-person singular)
arloeset ti (conditional second-person singular)
arloesset ti (conditional second-person singular)
arloesai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
arloessai fo (conditional singular third-person)
arloesen ni (conditional first-person plural)
arloessen ni (conditional first-person plural)
arloesech chi (conditional plural second-person)
arloessech chi (conditional plural second-person)
arloesen nhw (conditional plural third-person)
arloessen nhw (conditional plural third-person)
arloesais i (first-person preterite singular)
arloeses i (first-person preterite singular)
arloesaist ti (preterite second-person singular)
arloesest ti (preterite second-person singular)
arloesodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
arloeson ni (first-person plural preterite)
arloesoch chi (plural preterite second-person)
arloeson nhw (plural preterite third-person)
arloesa (imperative second-person singular)
arloeswch (imperative plural second-person)
arloesi
harloesi (prothesis-h)

From arloes (“empty space, clearing”) + -i. Doublet of arllwys (“to pour”).

(transitive, obsolete) to clear, to purge, to empty

to clear, to purge, to empty
to vomit, to cleanse


toriad

toriadau (plural)
toriad
doriad (soft)
nhoriad
thoriad

(dermatology)
(arithmetic, archaic) fraction


mynegfys

mynegfysedd (plural)
mynegfys
fynegfys (soft)

From mynegi (“to express”) + bys (“finger”).


cawod

cawodau (plural)
cawodydd (plural)
cawod
gawod (soft)
nghawod
chawod

From Middle Welsh cawat, from Proto-Celtic *kowotos (compare Cornish kowas, Breton kaouad), from Proto-Indo-European *(s)ḱeh₁w- (“cold, rainy; north”); compare Latin caurus (“northwestern wind”), Lithuanian šiáurė (“north”), Russian се́вер (séver, “north”).

inh

(dermatology, North Wales) rash (likened to splashes of a rainshower on skin)

(medicine) fit or attack of sickness or pain


clorosis

clorosis
glorosis (soft)
nghlorosis
chlorosis

(pathology) chlorosis (anaemia characterised by skin turning green)


cymhleth

cy-noun

cymhleth m or f (plural cymhlethau or cymhlethion or cymhlethoedd)

cymhlethau (plural)
cymhlethion (plural)
cymhlethoedd (plural)
cymhleth
gymhleth (soft)
nghymhleth
chymhleth

From cym- + pleth (“plait, braid”), with nasal mutation.


iselydd

iselyddion (plural)
iselydd
hiselydd (prothesis-h)


adweitheg

From adwaith (“reaction”) + -eg (“-ology”).

alternative medicine
alternative medicine


adweithegydd

adweithegwyr (plural)
adweithegydd
hadweithegydd (prothesis-h)

/ˌadwei̯ˈθɛɡɨ̞ð/

/ˌadwei̯ˈθeːɡɪð/

/ˌadwei̯ˈθɛɡɪð/

From adweitheg (“reflexology”) + -ydd (“-ist”).


adferiadydd

cy-noun

adferiadydd m (plural adferiadwyr or adferiadyddion)

adferiadwyr (plural)
adferiadyddion (plural)
adferiadydd
hadferiadydd (prothesis-h)

From adferiad (“restoration, recovery”) + -ydd.


rhych

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


cymorth cyntaf

cymorth cyntaf
gymorth cyntaf (soft)
nghymorth cyntaf
chymorth cyntaf

From cymorth (“aid”) + cyntaf (“first”).


sgerbwd

cy-noun

sgerbwd m (plural sgerbydau, not mutable)


heintrydd

cy-adj

heintrydd (feminine singular heintrydd, plural heintrydd, equative mor heintrydd, comparative mwy heintrydd, superlative mwyaf heintrydd, not mutable)

heintrydd (feminine singular)
heintrydd (plural)
mor heintrydd (equative)
mwy heintrydd (comparative)
mwyaf heintrydd (superlative)

From haint (“infection”) + rhydd (“free”).


tawelyn

tawelion (plural)
tawelyn
dawelyn (soft)
nhawelyn
thawelyn


traul

cy-noun

traul m or f (plural treuliau or treulion)

treuliau (plural)
treulion (plural)
traul
draul (soft)
nhraul
thraul


tagiad

tagiadau (plural)
tagiad
dagiad (soft)
nhagiad
thagiad


llindag

From llin (“line”) + tag (“suffocation”).


trawsblaniad

trawsblaniadau (plural)
trawsblaniad
drawsblaniad (soft)
nhrawsblaniad
thrawsblaniad


simsanrwydd

simsanrwydd m (uncountable, not mutable)


lwyn

Borrowed from Old French loigne or Middle English loyne, ultimately from Latin lumbus (“loin”).

(anatomy) loins (of human being or animal)


hyblyn

hyblyn m (plural hyblynnau, not mutable)

From hẁb (“boost, bush, thrust”) + llyn (“drink; spirit”) under the influence of brechlyn (“vaccine”).

com

"Dwi'n meddwl bod rhaid i ni fod yn realistig - mae yna elfennau, ar hyn o bryd, sy'n bodoli efo'r hyblyn - er enghraifft, sicrhau fod pobl yn cael eu goruchwylio ar ôl ei chael hi," ychwanegodd.

"I think that we have to be realistic - there are issues, at the moment, that exist with the booster - for example, ensuring that people are supervised after having it," he added.


stethosgop

cy-noun

stethosgop m (plural stethosgopau, not mutable)

/ˌsdɛθɔsˈɡɔp/

[ˌstɛθɔsˈkɔpʰ]


deubegwn

cy-adj

deubegwn (feminine singular deubegwn, plural deubegwn, equative mor ddeubegwn, comparative mwy deubegwn, superlative mwyaf deubegwn)

deubegwn (feminine singular)
deubegwn (plural)
mor ddeubegwn (equative)
mwy deubegwn (comparative)
mwyaf deubegwn (superlative)
deubegwn
ddeubegwn (soft)
neubegwn


chwysigen

cy-noun

chwysigen f (plural chwysigod, not mutable)

/χwəˈsiːɡɛn/

From Middle Welsh chuyssigen, an alteration (with the suffix -en) of Proto-Brythonic *guɨsig, from Latin vēsīca (“bladder”).


bys bach

bysedd bach (plural)
bys bach
fys bach (soft)
mys bach


bys blaen

bysedd blaen (plural)
bys blaen
fys blaen (soft)
mys blaen


bogail

bogail m or f (plural bogeiliau or bogelau)

bogeiliau (plural)
bogelau (plural)
bogail
fogail (soft)
mogail


echdorri

cy-verb

echdorri (first-person singular present exdorraf)

exdorraf (first-person present singular)
echdorraf (first-person future indicative present singular)
echdorri (future indicative present second-person singular)
echdorra (future indicative present singular third-person)
echdorrwn (first-person future indicative plural present)
echdorrwch (future indicative plural present second-person)
echdorrant (future indicative plural present third-person)
echdorrir (future impersonal indicative present)
echdorrwn (conditional first-person singular)
echdorrwn (first-person imperfect indicative singular subjunctive)
echdorrit (conditional second-person singular)
echdorrit (imperfect indicative second-person singular subjunctive)
echdorrai (conditional singular third-person)
echdorrai (imperfect indicative singular subjunctive third-person)
echdorrem (conditional first-person plural)
echdorrem (first-person imperfect indicative plural subjunctive)
echdorrech (conditional plural second-person)
echdorrech (imperfect indicative plural second-person subjunctive)
echdorrent (conditional plural third-person)
echdorrent (imperfect indicative plural subjunctive third-person)
echdorrid (conditional impersonal)
echdorrid (imperfect impersonal indicative subjunctive)
echdorrais (first-person preterite singular)
echdorraist (preterite second-person singular)
echdorrodd (preterite singular third-person)
echdorasom (first-person plural preterite)
echdorasoch (plural preterite second-person)
echdorasant (plural preterite third-person)
echdorrwyd (impersonal preterite)
echdoraswn (first-person pluperfect singular)
echdorasit (pluperfect second-person singular)
echdorasai (pluperfect singular third-person)
echdorasem (first-person pluperfect plural)
echdorasech (pluperfect plural second-person)
echdorasent (pluperfect plural third-person)
echdorasid (impersonal pluperfect)
echdoresid (impersonal pluperfect)
echdorrwyf (first-person present singular subjunctive)
echdorrych (present second-person singular subjunctive)
echdorro (present singular subjunctive third-person)
echdorrom (first-person plural present subjunctive)
echdorroch (plural present second-person subjunctive)
echdorront (plural present subjunctive third-person)
echdorrer (impersonal present subjunctive)
echdorra (imperative second-person singular)
echdorred (imperative singular third-person)
echdorrwn (first-person imperative plural)
echdorrwch (imperative plural second-person)
echdorrent (imperative plural third-person)
echdorrer (imperative impersonal)
echdorri (noun-from-verb)
echdoredig (participle)
echdoradwy (participle)
echdorra i (first-person future singular)
echdorraf i (first-person future singular)
echdorri di (future second-person singular)
echdorrith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
echdorriff e (future singular third-person)
echdorrwn ni (first-person future plural)
echdorrwch chi (future plural second-person)
echdorran nhw (future plural third-person)
echdorrwn i (conditional first-person singular)
echdorrswn i (conditional first-person singular)
echdorret ti (conditional second-person singular)
echdorrset ti (conditional second-person singular)
echdorrai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
echdorrsai fo (conditional singular third-person)
echdorren ni (conditional first-person plural)
echdorrsen ni (conditional first-person plural)
echdorrech chi (conditional plural second-person)
echdorrsech chi (conditional plural second-person)
echdorren nhw (conditional plural third-person)
echdorrsen nhw (conditional plural third-person)
echdorrais i (first-person preterite singular)
echdorres i (first-person preterite singular)
echdorraist ti (preterite second-person singular)
echdorrest ti (preterite second-person singular)
echdorrodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
echdorron ni (first-person plural preterite)
echdorroch chi (plural preterite second-person)
echdorron nhw (plural preterite third-person)
echdorra (imperative second-person singular)
echdorrwch (imperative plural second-person)
echdorri
hechdorri (prothesis-h)

From ech- (“out-, ex-”) + torri (“to cut”).


cymalol

cy-adj

cymalol (feminine singular cymalol, plural cymalol, equative mor gymalol, comparative mwy cymalol, superlative mwyaf cymalol)

cymalol (feminine singular)
cymalol (plural)
mor gymalol (equative)
mwy cymalol (comparative)
mwyaf cymalol (superlative)
cymalol
gymalol (soft)
nghymalol
chymalol


rhedweli

cy-noun

rhedweli m or f (plural rhedwelïau or rhedwelïoedd)

rhedwelïau (plural)
rhedwelïoedd (plural)
rhedweli
redweli (soft)

rhed- (“run”) + gweli (“bleeding wound”).


sawr

cy-noun

sawr m or f (plural sawrau, not mutable)

From Middle English savour, itself from Old French savor, savour.


arogl

arogl m or f (plural aroglau or arogleuon)

Rebracketing of aroglau as arogl + -au (“plural suffix”).


ploryn

ploryn m (plural plorod or plorynnod or plorynnau)

plorod (plural)
plorynnod (plural)
plorynnau (plural)
ploryn
bloryn (soft)
mhloryn
phloryn


camesgoriad

camesgoriadau (plural)
camesgoriad
gamesgoriad (soft)
nghamesgoriad
chamesgoriad

From camesgor (“to miscarry”) + -iad or cam- + esgoriad (“birth”).


erthylus

cy-adj

erthylus (feminine singular erthylus, plural erthylus, equative erthylused, comparative erthylusach, superlative erthylusaf)

erthylus (feminine singular)
erthylus (plural)
erthylused (equative)
erthylusach (comparative)
erthylusaf (superlative)
erthylus
herthylus (prothesis-h)


erthyliad

camesgoriadau (plural)
erthyliad
herthyliad (prothesis-h)


esgori

cy-verb

esgori (first-person singular present esgoraf)

esgoraf (first-person present singular)
esgoraf (first-person future indicative present singular)
esgori (future indicative present second-person singular)
esgor (future indicative present singular third-person)
esgora (future indicative present singular third-person)
esgorwn (first-person future indicative plural present)
esgorwch (future indicative plural present second-person)
esgorant (future indicative plural present third-person)
esgorir (future impersonal indicative present)
esgorwn (conditional first-person singular)
esgorwn (first-person imperfect indicative singular subjunctive)
esgorit (conditional second-person singular)
esgorit (imperfect indicative second-person singular subjunctive)
esgorai (conditional singular third-person)
esgorai (imperfect indicative singular subjunctive third-person)
esgorem (conditional first-person plural)
esgorem (first-person imperfect indicative plural subjunctive)
esgorech (conditional plural second-person)
esgorech (imperfect indicative plural second-person subjunctive)
esgorent (conditional plural third-person)
esgorent (imperfect indicative plural subjunctive third-person)
esgorid (conditional impersonal)
esgorid (imperfect impersonal indicative subjunctive)
esgorais (first-person preterite singular)
esgoraist (preterite second-person singular)
esgorodd (preterite singular third-person)
esgorasom (first-person plural preterite)
esgorasoch (plural preterite second-person)
esgorasant (plural preterite third-person)
esgorwyd (impersonal preterite)
esgoraswn (first-person pluperfect singular)
esgorasit (pluperfect second-person singular)
esgorasai (pluperfect singular third-person)
esgorasem (first-person pluperfect plural)
esgorasech (pluperfect plural second-person)
esgorasent (pluperfect plural third-person)
esgorasid (impersonal pluperfect)
esgoresid (impersonal pluperfect)
esgorwyf (first-person present singular subjunctive)
esgorych (present second-person singular subjunctive)
esgoro (present singular subjunctive third-person)
esgorom (first-person plural present subjunctive)
esgoroch (plural present second-person subjunctive)
esgoront (plural present subjunctive third-person)
esgorer (impersonal present subjunctive)
esgor (imperative second-person singular)
esgora (imperative second-person singular)
esgored (imperative singular third-person)
esgorwn (first-person imperative plural)
esgorwch (imperative plural second-person)
esgorent (imperative plural third-person)
esgorer (imperative impersonal)
esgori (noun-from-verb)
esgoredig (participle)
esgoradwy (participle)
esgora i (first-person future singular)
esgoraf i (first-person future singular)
esgori di (future second-person singular)
esgorith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
esgoriff e (future singular third-person)
esgorwn ni (first-person future plural)
esgorwch chi (future plural second-person)
esgoran nhw (future plural third-person)
esgorwn i (conditional first-person singular)
esgorswn i (conditional first-person singular)
esgoret ti (conditional second-person singular)
esgorset ti (conditional second-person singular)
esgorai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
esgorsai fo (conditional singular third-person)
esgoren ni (conditional first-person plural)
esgorsen ni (conditional first-person plural)
esgorech chi (conditional plural second-person)
esgorsech chi (conditional plural second-person)
esgoren nhw (conditional plural third-person)
esgorsen nhw (conditional plural third-person)
esgorais i (first-person preterite singular)
esgores i (first-person preterite singular)
esgoraist ti (preterite second-person singular)
esgorest ti (preterite second-person singular)
esgorodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
esgoron ni (first-person plural preterite)
esgoroch chi (plural preterite second-person)
esgoron nhw (plural preterite third-person)
esgora (imperative second-person singular)
esgorwch (imperative plural second-person)
esgori
hesgori (prothesis-h)


erthylu

erthylu (first-person singular present ethylaf)

ethylaf (first-person present singular)
erthylaf (first-person future indicative present singular)
erthyli (future indicative present second-person singular)
erthyl (future indicative present singular third-person)
erthyla (future indicative present singular third-person)
erthylwn (first-person future indicative plural present)
erthylwch (future indicative plural present second-person)
erthylant (future indicative plural present third-person)
erthylir (future impersonal indicative present)
erthylwn (conditional first-person singular)
erthylwn (first-person imperfect indicative singular subjunctive)
erthylit (conditional second-person singular)
erthylit (imperfect indicative second-person singular subjunctive)
erthylai (conditional singular third-person)
erthylai (imperfect indicative singular subjunctive third-person)
erthylem (conditional first-person plural)
erthylem (first-person imperfect indicative plural subjunctive)
erthylech (conditional plural second-person)
erthylech (imperfect indicative plural second-person subjunctive)
erthylent (conditional plural third-person)
erthylent (imperfect indicative plural subjunctive third-person)
erthylid (conditional impersonal)
erthylid (imperfect impersonal indicative subjunctive)
erthylais (first-person preterite singular)
erthylaist (preterite second-person singular)
erthylodd (preterite singular third-person)
erthylasom (first-person plural preterite)
erthylasoch (plural preterite second-person)
erthylasant (plural preterite third-person)
erthylwyd (impersonal preterite)
erthylaswn (first-person pluperfect singular)
erthylasit (pluperfect second-person singular)
erthylasai (pluperfect singular third-person)
erthylasem (first-person pluperfect plural)
erthylasech (pluperfect plural second-person)
erthylasent (pluperfect plural third-person)
erthylasid (impersonal pluperfect)
erthylesid (impersonal pluperfect)
erthylwyf (first-person present singular subjunctive)
erthylych (present second-person singular subjunctive)
erthylo (present singular subjunctive third-person)
erthylom (first-person plural present subjunctive)
erthyloch (plural present second-person subjunctive)
erthylont (plural present subjunctive third-person)
erthyler (impersonal present subjunctive)
erthyl (imperative second-person singular)
erthyla (imperative second-person singular)
erthyled (imperative singular third-person)
erthylwn (first-person imperative plural)
erthylwch (imperative plural second-person)
erthylent (imperative plural third-person)
erthyler (imperative impersonal)
erthylu (noun-from-verb)
erthyledig (participle)
erthyladwy (participle)
erthyla i (first-person future singular)
erthylaf i (first-person future singular)
erthyli di (future second-person singular)
erthylith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
erthyliff e (future singular third-person)
erthylwn ni (first-person future plural)
erthylwch chi (future plural second-person)
erthylan nhw (future plural third-person)
erthylwn i (conditional first-person singular)
erthylswn i (conditional first-person singular)
erthylet ti (conditional second-person singular)
erthylset ti (conditional second-person singular)
erthylai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
erthylsai fo (conditional singular third-person)
erthylen ni (conditional first-person plural)
erthylsen ni (conditional first-person plural)
erthylech chi (conditional plural second-person)
erthylsech chi (conditional plural second-person)
erthylen nhw (conditional plural third-person)
erthylsen nhw (conditional plural third-person)
erthylais i (first-person preterite singular)
erthyles i (first-person preterite singular)
erthylaist ti (preterite second-person singular)
erthylest ti (preterite second-person singular)
erthylodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
erthylon ni (first-person plural preterite)
erthyloch chi (plural preterite second-person)
erthylon nhw (plural preterite third-person)
erthyla (imperative second-person singular)
erthylwch (imperative plural second-person)
erthylu
herthylu (prothesis-h)


uwdfys

uwdfysedd (plural)
uwdfys
huwdfys (prothesis-h)

/ˈɨ̞u̯dvɨ̞s/


crychiad

crychiadau (plural)
crychiad
grychiad (soft)
nghrychiad
chrychiad

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


llwglyd

cy-adj

llwglyd (feminine singular llwglyd, plural llwglyd, equative mor lwglyd, comparative mwy llwglyd, superlative mwyaf llwglyd)

llwglyd (feminine singular)
llwglyd (plural)
mor lwglyd (equative)
mwy llwglyd (comparative)
mwyaf llwglyd (superlative)
llwglyd
lwglyd (soft)


llwg

possibly related to llwgu (“to starve”).

(veterinary medicine) foot rot in cows and sheep


marwdon

cy-noun

marwdon m or f (collective, singulative marwdonnen)

marwdonnen (singulative)
marwdon
farwdon (soft)


craith unnos

craith unnos f (plural creithiau or creithau)

creithiau (plural)
creithau (plural)
craith unnos
graith unnos (soft)
nghraith unnos
chraith unnos

craith + unnos. Literally “one night's scar”.

(pathology, idiomatic) rapidly healing scar


meinwe craith

meinwe craith f (plural meinweoedd craith)

meinweoedd craith (plural)
meinwe craith
feinwe craith (soft)


craith

creithiau (plural)
creithau (plural)
craith
graith (soft)
nghraith
chraith

From Middle Welsh creith, from Proto-Celtic *krenxtus. Cognate with Scottish Gaelic creuchd and Irish créacht (“gash”).

creithig

small scar; shepherd's needle (Scandix pecten-veneris)


trosglwyddiad

trosglwyddiad m (plural trosglwyddiadau)

trosglwyddiadau (plural)
trosglwyddiad
drosglwyddiad (soft)
nhrosglwyddiad
throsglwyddiad


ofari

ofarïau (plural)
ofari
hofari (prothesis-h)


wyfa

wyfa f (plural wyfaoedd or wyfeydd or wyfâu)

wyfaoedd (plural)
wyfeydd (plural)
wyfâu (plural)
wyfa
hwyfa (prothesis-h)


ailgyfuniad

ailgyfuniadau (plural)
ailgyfuniad
hailgyfuniad (prothesis-h)


llostgyfod

/ɬɔsdˈɡəvɔd/

llost (“tail, penis”) + cyfod (“raising, erection”).


llostchwydd

llostchwyddau (plural)
llostchwydd
lostchwydd (soft)

/ˈɬɔsdχwɨ̞ð/

[ˈɬɔstχwɨ̞ð]

/ˈɬɔsdχʊi̯ð/

[ˈɬɔstχʊi̯ð]

llost (“tail, penis”) + chwydd (“swelling, protuberance”).


priapaeth

priapaethau (plural)
priapaeth
briapaeth (soft)
mhriapaeth
phriapaeth


chwiliedydd genynnau

cy-noun

chwiliedydd genynnau m (plural chwiliedyddion genynnau, not mutable)

(genetics) hybridization probe, gene probe


palf

palfau (plural)
palf
balf (soft)
mhalf
phalf

Borrowed from Latin palma (“palm”). Cognate with Cornish palv. Doublet of llaw.


bys llaw

bys llaw m (plural bysedd llaw or bysedd dwylo)

bysedd llaw (plural)
bysedd dwylo (plural)
bys llaw
fys llaw (soft)
mys llaw

(anatomy) finger (when specified in contradistinction with a toe)


troedfys

traedfysedd (plural)
troedfys
droedfys (soft)
nhroedfys
throedfys

(anatomy, obsolete) toe (when specified in contradistinction with a finger)


cawod goch briger Gwener

cawod goch briger Gwener
gawod goch briger Gwener (soft)
nghawod goch briger Gwener
chawod goch briger Gwener

y gawod goch (“rust, red blight”) + briger Gwener (“maidenhair ferns”).

Cymdeithas Edward Llwyd
w:Cymdeithas Edward Llwyd

Gwasg Carreg Gwalch
w:Gwasg Carreg Gwalch

(phytopathology) maidenhair rust (Hyalopsora adianti-capilli-veneris)


cawod goch rhedynen gorniog

cawod goch rhedynen gorniog
gawod goch rhedynen gorniog (soft)
nghawod goch rhedynen gorniog
chawod goch rhedynen gorniog

y gawod goch (“rust, red blight”) + rhedynen gorniog (“beech fern”).

(phytopathology) beech fern rust (Uredinopsis filicina)


cawod goch

y gawod goch (canonical feminine)
cawod goch
gawod goch (soft)
nghawod goch
chawod goch

(phytopathology) rust, rubigo, red-colored fungal infection of plants


glaswst

y laswst (canonical feminine)
glaswst
laswst (soft)
nglaswst

(pathology) chlorosis, green sickness (anaemia characterised by skin turning green)


glasglwyf

y glasglwyf (canonical masculine)
glasglwyf
lasglwyf (soft)
nglasglwyf

From glas (“green”) + clwyf (“sickness”).


glesni

(phytopathology) chlorosis (yellowing or blanching of plant tissue due to chlorophyll deficiency)


malltod

mall (“pestilence, blight”) + -dod (“-ness”).

af

(veterinary medicine) liver rot, fascioliasis (in sheep)


tarddiant

tarddiannau (plural)
tarddiant
darddiant (soft)
nharddiant
tharddiant

From tarddu (“to emerge, to spring”) + -iant.


cawod goch tormaen

cawod goch tormaen
gawod goch tormaen (soft)
nghawod goch tormaen
chawod goch tormaen

y gawod goch (“rust, red blight”) + tormaen (“saxifrage”).

(phytopathology) saxifrage rust (Melampsora vernalis)


parddu tormaen

parddu tormaen
barddu tormaen (soft)
mharddu tormaen
pharddu tormaen

parddu (“smut”) + tormaen (“saxifrage”).

(phytopathology) saxifrage smut (Entyloma chrysosplenii)


rhwd marchredyn

(phytopathology) male fern rust (Milesina carpatorum)


rhwd

Perhaps from Proto-Celtic *rutu-, as in the placename Rutupiae.


rhwymyn tynhau

cy-noun

rhwymyn tynhau m (plural rhwymynnau tynhau)

rhwymynnau tynhau (plural)
rhwymyn tynhau
rwymyn tynhau (soft)


parddu briallu

parddu briallu
barddu briallu (soft)
mharddu briallu
pharddu briallu

parddu (“smut”) + briallu (“primroses”).

(phytopathology) bird's-eye-primrose smut (Urocystis primulicola)


cysb

(veterinary medicine) grass tetany, the staggers


gwythïen

gwythïen m or f (plural gwythiennau or gwythienni)

gwythiennau (plural)
gwythienni (plural)
gwythïen
wythïen (soft)
ngwythïen

Singulative of gwythi (“veins”, archaic), plural of gŵyth (“vein”, archaic).


mallter

mall (“pestilence, blight”) + -ter (“-ness”).


atchweliad

(biology, genetics, psychology, statistics) regression


pen-glin

pen-gliniau (plural)
pen-glin
ben-glin (soft)
mhen-glin
phen-glin


cesail morddwyd

cy-noun

cesail morddwyd f (plural ceseiliau morddwydydd)

ceseiliau morddwydydd (plural)
cesail morddwyd
gesail morddwyd (soft)
nghesail morddwyd
chesail morddwyd


gwäell y fraich

gwäell y fraich f (plural gwëyll y breich)

gwëyll y breich (plural)
gwäell y fraich
wäell y fraich (soft)
ngwäell y fraich

(anatomy) radius (long bone in the forearm)


cesail y forddwyd

cesail y forddwyd f (plural ceseiliau y morddwydydd)

ceseiliau y morddwydydd (plural)
cesail y forddwyd
gesail y forddwyd (soft)
nghesail y forddwyd
chesail y forddwyd

(anatomy) Alternative form of cesail morddwyd (“groin”)


morddwyd

morddwydydd (plural)
morddwyd
forddwyd (soft)


fector

(biology, medicine) a vector (a means of transmission)


ffocws cinetig

ffocws cinetig m (plural ffocysau cinetig, not mutable)

ffocysau cinetig (plural)
ffocws cinetig


rhwd mynawyd-y-bugail

rhwd mynawyd-y-bugail m or f (uncountable)

rhwd mynawyd-y-bugail
rwd mynawyd-y-bugail (soft)

(phytopathology) geranium rust (Uromyces geranii)


cawod goch cegid

cawod goch cegid
gawod goch cegid (soft)
nghawod goch cegid
chawod goch cegid

y gawod goch (“rust, red blight”) + cegid (“hemlock”).

(phytopathology) cowbane rust (Puccinia cicutae)


isddatgymalu

cy-verb

isddatgymalu (first-person singular present isddatgymalaf)

isddatgymalaf (first-person present singular)
isddatgymalu
hisddatgymalu (prothesis-h)

From is- (“sub-”) + datgymalu (“to dislocate”).


datgymalu

cy-verb

datgymalu (first-person singular present datgymalaf)

datgymalaf (first-person present singular)
datgymalu
ddatgymalu (soft)
natgymalu

From dat- (“de-”) + cymalu (“to joint”).