mynydd

mynyddoedd (plural)
mynydd
fynydd (soft)

From Middle Welsh mynyð, from Proto-Brythonic *mönɨð, from Proto-Celtic *moniyos (compare Cornish menydh, Breton menez), from Proto-Indo-European *men- (“to tower, stand out”) (compare Latin mōns).


breg

Perhaps borrowed either from Middle English breck (“breach; failing”) or from Old Irish bréc (“lie, deception”).


cylch

cy-noun

cylch m (plural cylchoedd or cylchau or cylchon or cylchion)

cylchoedd (plural)
cylchau (plural)
cylchon (plural)
cylchion (plural)
cylch
gylch (soft)
nghylch
chylch

From Middle Welsh kylch, from Proto-Brythonic *kɨlx. Cognate with Breton kelc'h and Welsh kylgh.


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 tron, Breton stroen, and also with French trogne via Gaulish trugna (“nose, snout”).


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

(geology) vertical furrow, fissure or fault in a rock


Awstralia

(geology) Australia (a continent consisting of the land on the Australian tectonic plate, i.e. Australia, New Guinea and intervening islands)


cilfach

cilfachau (plural)
cilfach
gilfach (soft)
nghilfach
chilfach

(geography) creek, inlet of the sea, bay


mantell

From Latin mantellum (“cloak”), diminutive of mantum, of Gaulish origin.


gwregys

gwregysau (plural)
gwregys
wregys (soft)
ngwregys

With metathesis from Old Welsh guecrissou, from Proto-Brythonic *gwö-krissus (“belt”, literally “below-shirt”) (compare Cornish grugys, Breton gouriz), derived from Proto-Celtic *krissus, whence Welsh crys (“shirt”).


gradd

graddau (plural)
gradd
radd (soft)
ngradd

From Middle Welsh grað, from Proto-Brythonic *grað, from Latin gradus (“degree”). Doublet of gris.

o'r radd flaenaf

of the highest degree, of the best quality

(geography) degree (unit of measurement of latitude and longitude)


rhych

Inherited from Middle Welsh rych, from Proto-Celtic *ɸrikā, from Proto-Indo-European *perḱ- (“to dig”). Cognate with English furrow and Latin porca (“ridge”).

rhychiog

grooved; corrugated; striated; furrowed (brow)

rhychu

to groove; corrugate; striate; furrow (brow)


culdir

culdiroedd (plural)
culdir
guldir (soft)
nghuldir
chuldir


peiran

peiranau (plural)
peiran
beiran (soft)
mheiran
pheiran


ffawt

Borrowed from Middle English faute. Doublet of ffôt.

Mae llinell ffawt yn rhedeg o'r Gogledd i'r De trwy ganol yr Eidal.

A fault line runs from north to south through the middle of Italy.


gogwyddiad

gogwyddiadau (plural)
gogwyddiad
ogwyddiad (soft)
ngogwyddiad


nawnlin

cy-noun

nawnlin f (plural nawnlinau or nawnliniau, not mutable)


estynwlad

estynwledydd (plural)
estynwlad
hestynwlad (prothesis-h)

From estyn (“to extend”) + gwlad (“country, land”).


estyn

cy-verb

estyn (first-person singular present estynnaf)

estynnaf (first-person present singular)
estynnaf (first-person future indicative present singular)
estynni (future indicative present second-person singular)
estyn (future indicative present singular third-person)
estynna (future indicative present singular third-person)
estynnwn (first-person future indicative plural present)
estynnwch (future indicative plural present second-person)
estynnant (future indicative plural present third-person)
estynnir (future impersonal indicative present)
estynnwn (conditional first-person singular)
estynnwn (first-person imperfect indicative singular subjunctive)
estynnit (conditional second-person singular)
estynnit (imperfect indicative second-person singular subjunctive)
estynnai (conditional singular third-person)
estynnai (imperfect indicative singular subjunctive third-person)
estynnem (conditional first-person plural)
estynnem (first-person imperfect indicative plural subjunctive)
estynnech (conditional plural second-person)
estynnech (imperfect indicative plural second-person subjunctive)
estynnent (conditional plural third-person)
estynnent (imperfect indicative plural subjunctive third-person)
estynnid (conditional impersonal)
estynnid (imperfect impersonal indicative subjunctive)
estynnais (first-person preterite singular)
estynnaist (preterite second-person singular)
estynnodd (preterite singular third-person)
estynasom (first-person plural preterite)
estynasoch (plural preterite second-person)
estynasant (plural preterite third-person)
estynnwyd (impersonal preterite)
estynaswn (first-person pluperfect singular)
estynasit (pluperfect second-person singular)
estynasai (pluperfect singular third-person)
estynasem (first-person pluperfect plural)
estynasech (pluperfect plural second-person)
estynasent (pluperfect plural third-person)
estynasid (impersonal pluperfect)
estynesid (impersonal pluperfect)
estynnwyf (first-person present singular subjunctive)
estynnych (present second-person singular subjunctive)
estynno (present singular subjunctive third-person)
estynnom (first-person plural present subjunctive)
estynnoch (plural present second-person subjunctive)
estynnont (plural present subjunctive third-person)
estynner (impersonal present subjunctive)
estyn (imperative second-person singular)
estynna (imperative second-person singular)
estynned (imperative singular third-person)
estynnwn (first-person imperative plural)
estynnwch (imperative plural second-person)
estynnent (imperative plural third-person)
estynner (imperative impersonal)
estyn (noun-from-verb singular)
estynedig (participle singular)
estynadwy (participle singular)
estynna i (first-person future singular)
estynnaf i (first-person future singular)
estynni di (future second-person singular)
estynnith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
estynniff e (future singular third-person)
estynnwn ni (first-person future plural)
estynnwch chi (future plural second-person)
estynnan nhw (future plural third-person)
estynnwn i (conditional first-person singular)
estynswn i (conditional first-person singular)
estynnet ti (conditional second-person singular)
estynset ti (conditional second-person singular)
estynnai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
estynsai fo (conditional singular third-person)
estynnen ni (conditional first-person plural)
estynsen ni (conditional first-person plural)
estynnech chi (conditional plural second-person)
estynsech chi (conditional plural second-person)
estynnen nhw (conditional plural third-person)
estynsen nhw (conditional plural third-person)
estynnais i (first-person preterite singular)
estynnes i (first-person preterite singular)
estynnaist ti (preterite second-person singular)
estynnest ti (preterite second-person singular)
estynnodd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
estynnon ni (first-person plural preterite)
estynnoch chi (plural preterite second-person)
estynnon nhw (plural preterite third-person)
estynna (imperative second-person singular)
estynnwch (imperative plural second-person)
estyn
hestyn (prothesis-h)

From Latin extendō (“to extend, to stretch, to enlarge”).

bor

(geography) (of an ice sheet) to advance


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 singular)
echdoredig (participle singular)
echdoradwy (participle singular)
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”).


echdoriad

echdoriadau (plural)
echdoriad
hechdoriad (prothesis-h)


dyddodiad

dyddodiadau (plural)
dyddodiad
ddyddodiad (soft)
nyddodiad

(chemistry, geography, countable) deposition


dyddodi

dyddodi (first-person singular present dyddodaf)

dyddodaf (first-person present singular)
dyddodaf (first-person future indicative present singular)
dyddodi (future indicative present second-person singular)
dyddoda (future indicative present singular third-person)
dyddodwn (first-person future indicative plural present)
dyddodwch (future indicative plural present second-person)
dyddodant (future indicative plural present third-person)
dyddodir (future impersonal indicative present)
dyddodwn (conditional first-person singular)
dyddodwn (first-person imperfect indicative singular subjunctive)
dyddodit (conditional second-person singular)
dyddodit (imperfect indicative second-person singular subjunctive)
dyddodai (conditional singular third-person)
dyddodai (imperfect indicative singular subjunctive third-person)
dyddodem (conditional first-person plural)
dyddodem (first-person imperfect indicative plural subjunctive)
dyddodech (conditional plural second-person)
dyddodech (imperfect indicative plural second-person subjunctive)
dyddodent (conditional plural third-person)
dyddodent (imperfect indicative plural subjunctive third-person)
dyddodid (conditional impersonal)
dyddodid (imperfect impersonal indicative subjunctive)
dyddodais (first-person preterite singular)
dyddodaist (preterite second-person singular)
dyddododd (preterite singular third-person)
dyddodasom (first-person plural preterite)
dyddodasoch (plural preterite second-person)
dyddodasant (plural preterite third-person)
dyddodwyd (impersonal preterite)
dyddodaswn (first-person pluperfect singular)
dyddodasit (pluperfect second-person singular)
dyddodasai (pluperfect singular third-person)
dyddodasem (first-person pluperfect plural)
dyddodasech (pluperfect plural second-person)
dyddodasent (pluperfect plural third-person)
dyddodasid (impersonal pluperfect)
dyddodesid (impersonal pluperfect)
dyddodwyf (first-person present singular subjunctive)
dyddodych (present second-person singular subjunctive)
dyddodo (present singular subjunctive third-person)
dyddodom (first-person plural present subjunctive)
dyddodoch (plural present second-person subjunctive)
dyddodont (plural present subjunctive third-person)
dyddoder (impersonal present subjunctive)
dyddoda (imperative second-person singular)
dyddoded (imperative singular third-person)
dyddodwn (first-person imperative plural)
dyddodwch (imperative plural second-person)
dyddodent (imperative plural third-person)
dyddoder (imperative impersonal)
dyddodi (noun-from-verb singular)
dyddodedig (participle singular)
dyddodadwy (participle singular)
dyddoda i (first-person future singular)
dyddodaf i (first-person future singular)
dyddodi di (future second-person singular)
dyddodith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
dyddodiff e (future singular third-person)
dyddodwn ni (first-person future plural)
dyddodwch chi (future plural second-person)
dyddodan nhw (future plural third-person)
dyddodwn i (conditional first-person singular)
dyddodswn i (conditional first-person singular)
dyddodet ti (conditional second-person singular)
dyddodset ti (conditional second-person singular)
dyddodai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
dyddodsai fo (conditional singular third-person)
dyddoden ni (conditional first-person plural)
dyddodsen ni (conditional first-person plural)
dyddodech chi (conditional plural second-person)
dyddodsech chi (conditional plural second-person)
dyddoden nhw (conditional plural third-person)
dyddodsen nhw (conditional plural third-person)
dyddodais i (first-person preterite singular)
dyddodes i (first-person preterite singular)
dyddodaist ti (preterite second-person singular)
dyddodest ti (preterite second-person singular)
dyddododd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
dyddodon ni (first-person plural preterite)
dyddodoch chi (plural preterite second-person)
dyddodon nhw (plural preterite third-person)
dyddoda (imperative second-person singular)
dyddodwch (imperative plural second-person)
dyddodi
ddyddodi (soft)
nyddodi


gwaddod

From Proto-Celtic *wodātu. Synchrynically analysable as a deverbalisation of gwaddodi (“to precipitate”).


gwaddodiad

gwaddodiadau (plural)
gwaddodiad
waddodiad (soft)
ngwaddodiad

From gwaddodi (“to precipitate”) + -iad.


gwaddodi

gwaddodi (first-person singular present gwaddodaf)

gwaddodaf (first-person present singular)
gwaddodaf (first-person future indicative present singular)
gwaddodi (future indicative present second-person singular)
gwaddoda (future indicative present singular third-person)
gwaddodwn (first-person future indicative plural present)
gwaddodwch (future indicative plural present second-person)
gwaddodant (future indicative plural present third-person)
gwaddodir (future impersonal indicative present)
gwaddodwn (conditional first-person singular)
gwaddodwn (first-person imperfect indicative singular subjunctive)
gwaddodit (conditional second-person singular)
gwaddodit (imperfect indicative second-person singular subjunctive)
gwaddodai (conditional singular third-person)
gwaddodai (imperfect indicative singular subjunctive third-person)
gwaddodem (conditional first-person plural)
gwaddodem (first-person imperfect indicative plural subjunctive)
gwaddodech (conditional plural second-person)
gwaddodech (imperfect indicative plural second-person subjunctive)
gwaddodent (conditional plural third-person)
gwaddodent (imperfect indicative plural subjunctive third-person)
gwaddodid (conditional impersonal)
gwaddodid (imperfect impersonal indicative subjunctive)
gwaddodais (first-person preterite singular)
gwaddodaist (preterite second-person singular)
gwaddododd (preterite singular third-person)
gwaddodasom (first-person plural preterite)
gwaddodasoch (plural preterite second-person)
gwaddodasant (plural preterite third-person)
gwaddodwyd (impersonal preterite)
gwaddodaswn (first-person pluperfect singular)
gwaddodasit (pluperfect second-person singular)
gwaddodasai (pluperfect singular third-person)
gwaddodasem (first-person pluperfect plural)
gwaddodasech (pluperfect plural second-person)
gwaddodasent (pluperfect plural third-person)
gwaddodasid (impersonal pluperfect)
gwaddodesid (impersonal pluperfect)
gwaddodwyf (first-person present singular subjunctive)
gwaddodych (present second-person singular subjunctive)
gwaddodo (present singular subjunctive third-person)
gwaddodom (first-person plural present subjunctive)
gwaddodoch (plural present second-person subjunctive)
gwaddodont (plural present subjunctive third-person)
gwaddoder (impersonal present subjunctive)
gwaddoda (imperative second-person singular)
gwaddoded (imperative singular third-person)
gwaddodwn (first-person imperative plural)
gwaddodwch (imperative plural second-person)
gwaddodent (imperative plural third-person)
gwaddoder (imperative impersonal)
gwaddodi (noun-from-verb singular)
gwaddodedig (participle singular)
gwaddodadwy (participle singular)
gwaddoda i (first-person future singular)
gwaddodaf i (first-person future singular)
gwaddodi di (future second-person singular)
gwaddodith o (future singular third-person)
e (future singular third-person)
hi (future singular third-person)
gwaddodiff e (future singular third-person)
gwaddodwn ni (first-person future plural)
gwaddodwch chi (future plural second-person)
gwaddodan nhw (future plural third-person)
gwaddodwn i (conditional first-person singular)
gwaddodswn i (conditional first-person singular)
gwaddodet ti (conditional second-person singular)
gwaddodset ti (conditional second-person singular)
gwaddodai fo (conditional singular third-person)
fe (conditional singular third-person)
hi (conditional singular third-person)
gwaddodsai fo (conditional singular third-person)
gwaddoden ni (conditional first-person plural)
gwaddodsen ni (conditional first-person plural)
gwaddodech chi (conditional plural second-person)
gwaddodsech chi (conditional plural second-person)
gwaddoden nhw (conditional plural third-person)
gwaddodsen nhw (conditional plural third-person)
gwaddodais i (first-person preterite singular)
gwaddodes i (first-person preterite singular)
gwaddodaist ti (preterite second-person singular)
gwaddodest ti (preterite second-person singular)
gwaddododd o (preterite singular third-person)
e (preterite singular third-person)
hi (preterite singular third-person)
gwaddodon ni (first-person plural preterite)
gwaddodoch chi (plural preterite second-person)
gwaddodon nhw (plural preterite third-person)
gwaddoda (imperative second-person singular)
gwaddodwch (imperative plural second-person)
gwaddodi
waddodi (soft)
ngwaddodi

From gwa- (“under, sub-”) + dodi (“to put, to place”).

af

(chemistry, geography) to deposit sediment, to precipitate


dyddodyn

dyddodion (plural)
dyddodyn
ddyddodyn (soft)
nyddodyn

(geology, mostly plural) deposit, sediment


mewnlifol

cy-adj

mewnlifol (feminine singular mewnlifol, plural mewnlifol, equative mor fewnlifol, comparative mwy mewnlifol, superlative mwyaf mewnlifol)

mewnlifol (feminine singular)
mewnlifol (plural)
mor fewnlifol (equative)
mwy mewnlifol (comparative)
mwyaf mewnlifol (superlative)
mewnlifol
fewnlifol (soft)


lledred

cy-noun

lledred m (plural lledredau or lledredion)

lledredau (plural)
lledredion (plural)
lledred
ledred (soft)


astell

astell f (plural estyll or astelloedd or astellau or astelli)

estyll (plural)
astelloedd (plural)
astellau (plural)
astelli (plural)
astell
hastell (prothesis-h)


rhigol

rhigol f or m (plural rhigolau or rhigolydd or rhigolion)

rhigolau (plural)
rhigolydd (plural)
rhigolion (plural)


tafluniad

tafluniadau (plural)
tafluniad
dafluniad (soft)
nhafluniad
thafluniad


Pegwn y De

Pegwn y De
Begwn y De (soft)
Mhegwn y De
Phegwn y De
Pegwyn y Deau (alternative)


Pegwn y Gogledd

Pegwn y Gogledd
Begwn y Gogledd (soft)
Mhegwn y Gogledd
Phegwn y Gogledd


Môr y De

Môr y De
Fôr y De (soft)
Môr y Deau (alternative)


cyhydedd

cyhydedd m or f (plural cyhydeddau or cyhydeddion)

cyhydeddau (plural)
cyhydeddion (plural)
cyhydedd
gyhydedd (soft)
nghyhydedd
chyhydedd


cribell

cribellau (plural)
cribell
gribell (soft)
nghribell
chribell


gwaddodol

cy-adj

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

gwaddodol (feminine singular)
gwaddodol (plural)
gwaddodol
waddodol (soft)
ngwaddodol