glöyn byw

glöynnod bywion (plural)
glöyn byw
löyn byw (soft)
nglöyn byw

/ˌɡloː.ɨ̞n ˈbɪu̯/

/ˌɡloː.ɨ̞n ˈbɨ̞u̯/

Literally “living coal”, in reference to many common species of nymphalid butterflies which are red-orange and black.


pilipala

cy-noun

pilipala m (plural pilipalod or pilipalas)

pilipalod (plural)
pilipalas (plural)
pilipala
bilipala (soft)
mhilipala
philipala


pryf

pryfed (plural)
pryf
bryf (soft)
mhryf
phryf

PIE word
 *kʷŕ̥mis
From Middle Welsh pryf, from Old Welsh prem, from Proto-Brythonic *prɨβ̃, from Proto-Celtic *kʷrimis. Compare Cornish pryv (“worm, grub”), Breton preñv (“worm”).


lindys

lindys m (collective, singulative lindysyn, not mutable)


gwenyn

gwenyn f (collective, singulative gwenynen)

gwenynen (singulative)
gwenyn
wenyn (soft)
ngwenyn

From Proto-Celtic *wan-inyo- (compare Breton gwenan, Cornish gwenen), diminutive of *wano- (“tip, sting”) (modern gwân; see gwanu).


cylion

head

cylion m pl or f pl (masculine singulative cylionyn, feminine singulative cylionen)

cylionyn (masculine singulative)
cylionen (feminine singulative)
cylion
gylion (soft)
nghylion
chylion

From Middle Welsh kylyon, from Proto-Celtic *kulis (compare Cornish kelyon, Breton kelien, Old Irish cuil), from Proto-Indo-European *ḱuH-ló- (compare Latin culex (“gnat”), Old Armenian սլաք (slakʻ, “roasting spit”)).


pryfyn

pryfed (plural)
pryfyn
bryfyn (soft)
mhryfyn
phryfyn


cacwn

cy-noun

cacwn f (collective, singulative cacynen)

cacynen (singulative)
cacwn
gacwn (soft)
nghacwn
chacwn

Possibly from cach (“excrement”) + cŵn (“dogs”). See cachgi bwm (“bumblebee”) for similar etymological elements.


llau

From Middle Welsh lleu, from Proto-Celtic *luwā (compare Breton laou, Cornish low), from Proto-Indo-European *lewH- (compare English louse).


clêr

clêr f (collective, singulative cleren or cleheren)

cleren (singulative)
cleheren (singulative)
clêr
glêr (soft)
nghlêr
chlêr


morgrug

morgrug m (collective, singulative morgrugyn)

morgrugyn (singulative)
morgrug
forgrug (soft)

With an original meaning “anthill, ant colony”, from *mor (combining form of mŷr (“ant”)) + crug (“hill”).


gwyfyn

gwyfynod (plural)
gwyfyn
wyfyn (soft)
ngwyfyn

Perhaps related to gwiddon (“mite, weevil”), but the ultimate origin of both words is obscure. gwiddon also has a meaning of "hag," "giantess," which the GPC connects to the word gwŷdd (“wood, trees”).


gwybed

gwybedyn (singulative)
gwybed
wybed (soft)
ngwybed


gwybed ffwng

head

gwybed ffwng m (singulative gwybedyn ffwng)

gwybedyn ffwng (singulative)
gwybed ffwng
wybed ffwng (soft)
ngwybed ffwng

/ˌɡwəbɛd ˈfʊŋ/


emrallt

emralltiau (plural)
emrallt
hemrallt (prothesis-h)

(entomology) emerald (moth in the subfamily Geometrinae)


cyfarwydd

cy-noun

cyfarwydd m or f by sense (plural cyfarwyddiaid or cyfarwyddion)

cyfarwyddiaid (plural)
cyfarwyddion (plural)
cyfarwydd
gyfarwydd (soft)
nghyfarwydd
chyfarwydd

From cyf- + arwydd. Cognate with Old Irish comartha (“sign, mark, symbol”).


cachgi bwm

cy-noun

cachgi bwm m (plural cachgwn bwm or cachgi bwms)

cachgwn bwm (plural)
cachgi bwms (plural)
cachgi bwm
gachgi bwm (soft)
nghachgi bwm
chachgi bwm

/ˌkaχɡɪ ˈbʊm/

Possibly from cachgi (“coward”) + bwm (“boom, buzz”), where cachgi is literally an "excrement dog" (cf. cacwn (“bumblebees”) for similar etymological elements) and bwm is onomatopoeic (compare English bumblebee).


gwenyn meirch

gwenyn meirch f (collective, singulative gwenynen feirch)

gwenynen feirch (singulative)
gwenyn meirch
wenyn meirch (soft)
ngwenyn meirch

From gwenyn (“bees”) + meirch (“horses, stallions”).


picwns

cy-noun

picwns f (collective, singulative picwnen)

picwnen (singulative)
picwns
bicwns (soft)
mhicwns
phicwns

Related to pipgwn (“wasps”), namely pib (“pipe”) + cŵn (“dogs”), possibly under the influence of pig (“prickle, spike, sting”). See also piffgwn (“wasps”).


gwenyn gwyllt

gwenyn gwyllt f (collective, singulative gwenynen wyllt)

gwenynen wyllt (singulative)
gwenyn gwyllt
wenyn gwyllt (soft)
ngwenyn gwyllt

/ˌɡwɛnɨ̞n ˈɡwɨːɬd/

[ˌɡwɛnɨ̞ŋ ˈɡwɨːɬt]

/ˌɡweːnɪn ˈɡwɪɬd/

[ˌɡweːnɪŋ ˈɡwɪɬt]

/ˌɡwɛnɪn ˈɡwɪɬd/

[ˌɡwɛnɪŋ ˈɡwɪɬt]

From gwenyn (“bumblebees, wasps, hornets”) + gwyllt (“wild”).


cacwn meirch

cy-noun

cacwn meirch f (collective, singulative cacynen feirch)

cacynen feirch (singulative)
cacwn meirch
gacwn meirch (soft)
nghacwn meirch
chacwn meirch

From cacwn (“wasps, bumblebees, hornets”) + meirch (“horses, stallions”).


gwenyn mêl

cy-noun

gwenyn mêl f (collective, singulative gwenynen fêl)

gwenynen fêl (singulative)
gwenyn mêl
wenyn mêl (soft)
ngwenyn mêl


marchgacwn

marchgacwn f (collective, singulative marchgacynen)

marchgacynen (singulative)
marchgacwn
farchgacwn (soft)

From march (“horses, stallions”) + cacwn (“wasps, bumblebees, hornets”).


picwns coch

cy-noun

picwns coch f (collective, singulative picwnen goch)

picwnen goch (singulative)
picwns coch
bicwns coch (soft)
mhicwns coch
phicwns coch


chwain

chwain f (collective, singulative chwannen, not mutable)

From Middle Welsh chwein; cognate with Breton c'hoen.


llwydfelyn

llwydfelynion (plural)
llwydfelyn
lwydfelyn (soft)

/ɬʊɨ̯dˈvɛlɨ̞n/

Colias croceus
Wikispecies:Colias croceus

clouded yellow (any butterfly of the genus Colias, especially Colias croceus)


britheg

brithegion (plural)
britheg
fritheg (soft)
mritheg

snakeshead, snake's head fritillary (Fritillaria meleagris)


gwas neidr

gweision neidr (plural)
gwas neidr
was neidr (soft)
ngwas neidr


gwas y neidr

gwas y neidr m (plural gweision y neidr)

gweision y neidr (plural)
gwas y neidr
was y neidr (soft)
ngwas y neidr

From gwas (“servant”) + y (“(of) the”) + neidr (“snake”).


mursen

Possible borrowing from Old French virgene (“virgin”), backformed with /m/ because /v/ is its soft mutation (see similar examples: mantais (“advantage”), melfaréd (“velveret”), melfed (“velvet”), mentr (“venture”)).


gwäell

gwëyll (plural)
gweill (plural)
gwäell
wäell (soft)
ngwäell

darter (dragonfly in the genus Sympetrum)


llau pen

cy-noun

llau pen f (collective, singulative lleuen pen)

lleuen pen (singulative)
llau pen
lau pen (soft)

/ˌɬaɨ̯ ˈpɛn/


nedd

nedd f (collective, singulative nedden, not mutable)

From Proto-Celtic *snidā, from Proto-Indo-European *-níd-. Cognate with Cornish nedh, Breton nez, Irish sniodh, Manx snieg, Scottish Gaelic sneadh and also English nit.


siobyn

siobyn m (plural siobynnau or siobau, not mutable)

A tussock moth, particularly the rusty tussock moth (Orgyia antiqua).


marblis coed

marblis coed f (collective, singulative marblen goed)

marblen goed (singulative)
marblis coed
farblis coed (soft)


afal derw

afalau derw (plural)
afal derw
hafal derw (prothesis-h)


marbls bwci

marbls bwci f (collective, singulative ?)

marblis (“marbles”) + bwci (“boggart, bogey”).

(dialectal, Carmarthenshire) oak galls, oak apples


trilliw

cy-adj

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

trilliw (feminine singular)
trilliw (plural)


ceiliog rhedyn

cy-noun

ceiliog rhedyn m (plural ceiliogod rhedyn)

ceiliogod rhedyn (plural)
ceiliog rhedyn
geiliog rhedyn (soft)
ngheiliog rhedyn
cheiliog rhedyn


chwilen

chwilen f (plural chwilod or chwilennod, not mutable)

Back-formation from chwilod (“beetles”) by analogy with malwen/malwod (“snail”/“snails”), ploryn/plorod (“pimple”/“pimples”), etc.. Compare Breton c'houil, Cornish hwil.


mamwenyn

mamwenyn f (collective, singulative mamwenynen)

mamwenynen (singulative)
mamwenyn
famwenyn (soft)


modrydaf

modrydafau (plural)
modrydaf
fodrydaf (soft)

From *modr (“mother”) + bydaf (“swarm, nest of (wild) bees”)


bidog gwernos

cy-noun

bidog gwernos m (plural bidogau gwernos)

bidogau gwernos (plural)
bidog gwernos
fidog gwernos (soft)
midog gwernos

Acronicta alni
Acronicta alni#Translingual


cochbryf

[ˈkʰɔχprɨ̞v]


trychfil

trychfilod (plural)
trychfil
drychfil (soft)
nhrychfil
thrychfil

From trwch (“sad, unfortunate”) + mil (“beast, creature”).

com

creepy-crawly, bug, critter
especially an insect


ceiliog y gwair

cy-noun

ceiliog y gwair m (plural ceiliogod y gwair)

ceiliogod y gwair (plural)
ceiliog y gwair
geiliog y gwair (soft)
ngheiliog y gwair
cheiliog y gwair


cwlwm cariad

cwlwm cariad
gwlwm cariad (soft)
nghwlwm cariad
chwlwm cariad


bidog

bidogau (plural)
bidog
fidog (soft)
midog

Inherited from Proto-Celtic *bītū, from Proto-Indo-European *bʰeyh₂- (“to strike”). Cognate with Old Irish bíth.

inh

dagger moth (noctuoid moth of genus Acronicta)


cathan y gwernos

cy-noun

cathan y gwernos m (plural cathanau'r gwernos)

cathanau'r gwernos (plural)
cathan y gwernos
gathan y gwernos (soft)
nghathan y gwernos
chathan y gwernos


pryf y gannwyll

pryf y gannwyll m (plural pryfed y gannwyll)

pryfed y gannwyll (plural)
pryf y gannwyll
bryf y gannwyll (soft)
mhryf y gannwyll
phryf y gannwyll