can

From Middle Welsh and Old Welsh cant, from Proto-Brythonic *kant, from Proto-Celtic *kantom (“hundred”), ultimately from Proto-Indo-European *ḱm̥tóm.

(cardinal number) Apocopic form of cant (“one hundred”)


un

From Middle Welsh un, from Proto-Brythonic *ʉn, from Proto-Celtic *oinos, from Proto-Indo-European *h₁óynos.


biliwn

head

biliwn m or f (plural biliynau or biliwnau)


tri

tair (feminine)
tri
dri (soft)
nhri
thri

From Proto-Brythonic *tri, from Proto-Celtic *trīs, from Proto-Indo-European *tréyes.


cant

From Middle Welsh and Old Welsh cant, from Proto-Brythonic *kant, from Proto-Celtic *kantom, from Proto-Indo-European *ḱm̥tóm.


pump

From Middle Welsh pymp, from Old Welsh pimp, from Proto-Brythonic *pɨmp, from Proto-Celtic *kʷenkʷe, from Proto-Indo-European *pénkʷe.


dau

From Proto-Brythonic *dow, from Proto-Celtic *duwo, from Proto-Indo-European *dwóh₁.


pedwar

pedair (feminine)
pedwar
bedwar (soft)
mhedwar
phedwar

From Middle Welsh pedwar, from Old Welsh petuar, petguar, from Proto-Brythonic *pedwar, from Proto-Celtic *kʷetwores, from Proto-Indo-European *kʷetwóres.


chwech

From Proto-Brythonic *hwex, from Proto-Celtic *swexs, from Proto-Indo-European *swéḱs.


saith

From Middle Welsh seith, from Proto-Brythonic *seiθ, from Proto-Celtic *sextam, from Proto-Indo-European *septḿ̥.


wyth

From Proto-Brythonic *üiθ, from Proto-Celtic *oxtū (compare Cornish eth), Proto-Indo-European *oḱtṓw.


naw

From Proto-Brythonic *naw, from Proto-Celtic *nowan, from Proto-Indo-European *h₁néwn̥.


deg

From Middle Welsh deg, from Proto-Brythonic *deg, from Proto-Celtic *dekam, from Proto-Indo-European *déḱm̥.


mil

From Middle Welsh mil, from Proto-Brythonic *mil, from Latin mīlia. Cognate with Cornish mil, Breton mil, Irish míle.


pum

pum llyfr

(cardinal number) Apocopic form of pump (“five”)


miliwn

Borrowed from Middle English milioun; see million for more.


deng

(cardinal number) Alternative form of deg (“ten”)


myrdd

From Middle Welsh myrẟ, from Latin mȳrias, from Ancient Greek μῡριάς (mūriás, “number of 10,000”), from μῡρίος (mūríos, “numberless, countless, infinite”).


milcant

milcanfed (ordinal)
milcant
filcant (soft)

From mil (“thousand”) + cant (“hundred”).


ugain

From Old Welsh uceint, from Proto-Brythonic *ʉgėnt, from Proto-Celtic *wikantī, from Proto-Indo-European *h₁wih₁ḱm̥t, from *dwi(h₁)dḱm̥ti (“two-ten”).
Compare Latin vīgintī; also Cornish ugens, Breton ugent, Old Irish fiche.


chwe

(cardinal number) Apocopic form of chwech (used before a noun)


undeg un

(cardinal number) Nonstandard spelling of un deg un (“eleven”).


undeg dau

Dywed Chrysostom ac Augustine fod eu nifer yn undeg dau (12).

1891 March 4, “Y doethion o'r dwyrain”, in Y Gwyliedydd, page 3:

Chrysostom and Augustine say their number is twelve (12).

(cardinal number) Nonstandard spelling of un deg dau (“twelve”).


undeg tri

(cardinal number) Nonstandard spelling of un deg tri (“thirteen”).


deuddeg

taro deuddeg

to strike the right note; to strike twelve


tri ar ddeg

tair ar ddeg (feminine)
tri ar ddeg
dri ar ddeg (soft)
nhri ar ddeg
thri ar ddeg

From tri (“three”) + ar (“on”) + deg (“ten”).

Eithr ei dŷ ei hun a adeiladodd Solomon mewn tair blynedd ar ddeg, ac a orffennodd ei holl dŷ.

1588-1620, “1 Brenhinoedd 7:1”, in William Morgan, transl., edited by William Parry and John Davies, Mallwyd, Y Bibl Cyssegr-Lan, sef yr Hen Destament a’r Newydd^(https://cy.wikisource.org/wiki/Beibl_(1620)/1_Brenhinoedd); republished London, 1804:

Solomon was building his own house thirteen years, and he finished all his house.


undeg tair

(cardinal number) Nonstandard spelling of un deg tair (“thirteen”).


undeg dwy

/ˌɨ̞ndɛɡ ˈduːɨ̯/

/ˌɪndɛɡ ˈdʊi̯/

(cardinal number) Nonstandard spelling of un deg dwy (“twelve”).


un deg dau

un deg dwy (feminine)
un deg dau
hun deg dau (prothesis-h)

/ˌɨndɛɡ ˈdaɨ̯/

/ˌɪndɛɡ ˈdɔi̯/

From un (“one”) + deg (“ten”) + dau (“two”).


un deg tri

un deg tair (feminine)
un deg tri
hun deg tri (prothesis-h)

/ˌɨ̞ndɛɡ ˈtriː/

From un (“one”) + deg (“ten”) + tri (“three”).


un deg un

/ˌɨ̞ndɛɡ ˈɨːn/

/ˌɪndɛɡ ˈiːn/

From un (“one”) + deg (“ten”) + un (“one”).


un ar ddeg

/ˌɨːn ar ˈðeːɡ/

From un (“one”) + ar (“on”) + deg (“ten”).

Yr oedd y cyfnewidiad yma yn symud y trydydd o Medi, 1752, i'r pedwerydd ar ddeg or un mis, gwahaniaeth o un dydd ar ddeg.

1893 March 9, “Mahanoy City, Schuylkill Co., Pa.”, in Y Drych, page 3:

This change moved the third of September, 1752, to the fourteenth of the same month, a difference of eleven days.


pymtheg

pymtheg
bymtheg (soft)
mhymtheg
phymtheg

Proto-Brythonic *pɨmθeg, from Proto-Celtic *kʷenxtekam < *kʷenkʷe dekam. Equivalent to pump (“five”) + deg (“ten”)

inh

pymtheg yn y dwsin

nineteen to the dozen; fifteen in the dozen


pedwar ar ddeg

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pedwar ar ddeg m (feminine pedair ar ddeg)

pedair ar ddeg (feminine)
pedwar ar ddeg
bedwar ar ddeg (soft)
mhedwar ar ddeg
phedwar ar ddeg

From pedwar (“four”) + ar (“on”) + deg (“ten”).

com

1983, Cadi Jones, Ronald A. Richards, Y seintiau Celtaidd yng Nghymru: hanes pedwar ar ddeg o seintiau Cymru [The Celtic saints in Wales: the history of fourteen saints of Wales], Canolfan Genedlaethol Addysg Grefyddol:

1866, H. Humphreys, Hanes bywyd Richard Robert Jones: neu Dic Aberdaron, Cymro nodedig am ei dalent a'i archwaeth at ddysgu ieithoedd : yr hwn, yn ngwyneb pob anfantais, a weithiodd ei ffordd nes dyfod yn hyddysg mewn pedair ar ddeg o ieithoedd [TBA], H. Humphreys:


deugain

(cardinal number, vigesimal) forty, two score


un ar bymtheg

un ar bymtheg
hun ar bymtheg (prothesis-h)

/ˌɨːn ar ˈbəmθɛɡ/

From un (“one”) + ar (“on”) + pymtheg (“fifteen”).

Y mae enciliad yn arswydas. Yr wyf yn meddwl, pa fodd bynag, y bydd raid i Arglwydd Wellington ei atal. Nid ydym eto ond wedi profi pump o unarbymtheg sydd ar brawf. Y maent oll wedi eu collfarnu i farw, ac wedi eu saethu.

A retreat is a horror. I think, however, that it will have to be stopped by Lord Wellington. We have yet to prove it five of the sixteen are on trial. They have all been condemned to death by shooting.

3. Codiad o un ran o un-ar-bymtheng ceiniog y dynell am lenwi llongau â ɡlô, ac fod y rhai a weithiant y dydd i dderbyn 5s. y dydd, a'r rhai a weithiant y nos 7s. y nos.

1890 August 9, “Baner ac Amserau Cymru”, in Baner ac Amserau Cymru, page 8:

3. An increase of one part of fifteen pence a ton for filling ships with coal, and that those who work by the day to receive 5s. a day, and those who work by the night 7s. a night.

Synwn braidd na allai y beirniad galluog o ddinas Scranton gael un o unarbymtheng yn rhagori cligon ar ei gydymgeiswyr i gael y Goron yn gyfan.

1913 August 15, “Ar draws ac ar Hyd Gwlad y Ser a'r Brithresi”, in Seren Cymru, page 13:

We are a little surprised that the able judge from the city of Scranton could not have one of sixteen surpass his competitors by a margin to get the Crown intact.


trigain

(cardinal number, vigesimal) sixty, three score


trigain

trigeiniau (plural)
trigain
drigain (soft)
nhrigain
thrigain


pedwar ugain

(cardinal number, vigesimal) eighty, four score


hanner cant

From hanner (“half”) + cant (“hundred”).


chweugain

(cardinal number, obsolete, vigesimal) one hundred and twenty, six score


dau ar bymtheg

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dau ar bymtheg m (feminine dwy ar bymtheg)

dwy ar bymtheg (feminine)
dau ar bymtheg
ddau ar bymtheg (soft)
nau ar bymtheg

/ˌdaɨ̯ ar ˈbəmθɛɡ/

From dau (“two”) + ar (“on”) + pymtheg (“fifteen”).

com

Y mae yn dda genym weled cynnifer a dauarbymtheg o feirdd wedi cymeryd y maes yn erbyn yr arferiad gwrthun o gysgu mewn addoliad.

We are glad to see as many as seventeen poets have taken the field against the monstrous practice of sleeping in worship.


pedwar ar bymtheg

head

pedwar ar bymtheg m (feminine pedair ar bymtheg)

pedair ar bymtheg (feminine)
pedwar ar bymtheg
bedwar ar bymtheg (soft)
mhedwar ar bymtheg
phedwar ar bymtheg

From pedwar (“four”) + ar (“on”) + pymtheg (“fifteen”).


un ar hugain

un ar hugain
hun ar hugain (prothesis-h)

From un (“one”) + ar (“on”) + ugain (“twenty”).


dau ar hugain

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dau ar hugain m (feminine dwy ar hugain)

dwy ar hugain (feminine)
dau ar hugain
ddau ar hugain (soft)
nau ar hugain

From dau (“two”) + ar (“on”) + ugain (“twenty”).


tri ar hugain

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tri ar hugain m (feminine tair ar hugain)

tair ar hugain (feminine)
tri ar hugain
dri ar hugain (soft)
nhri ar hugain
thri ar hugain

From tri (“three”) + ar (“on”) + ugain (“twenty”).


pedwar ar hugain

head

pedwar ar hugain m (feminine pedair ar hugain)

pedair ar hugain (feminine)
pedwar ar hugain
bedwar ar hugain (soft)
mhedwar ar hugain
phedwar ar hugain

From pedwar (“four”) + ar (“on”) + ugain (“twenty”).


pump ar hugain

pump ar hugain
bump ar hugain (soft)
mhump ar hugain
phump ar hugain

From pump (“five”) + ar (“on”) + ugain (“twenty”).

(cardinal number, vigesimal) twenty-five


chwech ar hugain

/ˌweːχ ar ˈɪɡɛn/

From chwech (“six”) + ar (“on”) + ugain (“twenty”).


saith ar hugain

From saith (“seven”) + ar (“on”) + ugain (“twenty”).

(cardinal number, vigesimal) twenty-seven


wyth ar hugain

wyth ar hugain
hwyth ar hugain (prothesis-h)

/ˌuːɨ̯θ ar ˈhɪɡai̯n/

/ˌʊi̯θ ar ˈhɪɡɛn/

/ˌʊi̯θ ar ˈhiːɡɛn/

From wyth (“eight”) + ar (“on”) + ugain (“twenty”).


naw ar hugain

From naw (“nine”) + ar (“on”) + ugain (“twenty”).


deg ar hugain

deg ar hugain
ddeg ar hugain (soft)
neg ar hugain

From deg (“ten”) + ar (“on”) + ugain (“twenty”).


undeg pedwar

(cardinal number) Nonstandard spelling of un deg pedwar (“fourteen”).


undeg pump

Claddwyd ei rhan farwol yn Rawson yn yr "Hen Fynwent" y dydd Llun canlynol; yn unol a'i dymuniad ger ei phriod a'i merch Elizabeth y rhai oedd wedi ei rhygflaenu i'r byd tu draw i'r llen, – y ferch erys dau ddeg wyth, a'r priod erys undeg pump o flynyddau.

1915 October 15, “Marwolaeth Mrs. Jones Y Bedol”, in Y Drafod, page 2:

Her mortal remains were buried in Rawson in the "Old Graveyard" the following Monday; in accordance with her desire to be near her husband and her daughter Elizabeth who had preceded her into the world beyond the veil, – the daughter twenty-eight years before, and her husband fifteen years before.

(cardinal number) Nonstandard spelling of un deg pump (“fifteen”).


un deg pedwar

head

un deg pedwar m (feminine un deg pedair)

un deg pedair (feminine)
un deg pedwar
hun deg pedwar (prothesis-h)

From un (“one”) + deg (“ten”) + pedwar (“four”).


un deg pump

/ˌɨ̞ndɛɡ ˈpɨ̞mp/

From un (“one”) + deg (“ten”) + pump (“five”).


wyth deg

wythdegau (plural)
wyth deg
hwyth deg (prothesis-h)


wythdeg

(cardinal number) Nonstandard spelling of wyth deg (“eighty”).


un deg chwech

un deg chwech
hun deg chwech (prothesis-h)

/ˌɨ̞ndɛɡ ˈχweːχ/

/ˌɪndɛɡ ˈχweːχ/

From un (“one”) + deg (“ten”) + chwech (“six”).


un deg saith

un deg saith
hun deg saith (prothesis-h)

/ˌɨ̞ndɛɡ ˈsai̯θ/

/ˌɪndɛɡ ˈsai̯θ/

From un (“one”) + deg (“ten”) + saith (“seven”).


un deg wyth

/ˌɨ̞ndɛɡ ˈuːɨ̯θ/

/ˌɪndɛɡ ˈʊi̯θ/

From un (“one”) + deg (“ten”) + wyth (“eight”).


un deg naw

/ˌɨ̞ndɛɡ ˈnaːu̯/

From un (“one”) + deg (“ten”) + naw (“nine”).


un ar ddeg ar hugain

un ar ddeg ar hugain
hun ar ddeg ar hugain (prothesis-h)

From un (“one”) + ar (“on”) + deg (“ten”) + ar (“on”) + ugain (“twenty”).


dau ddeg

/ˌdaɨ̯ ˈðeːɡ/

/ˌdai̯ ˈðeːɡ/


dau ddeg un

dau ddeg un
ddau ddeg un (soft)
nau ddeg un

/ˌdaɨ̯ðɛɡ ˈɨːn/

/ˌdai̯ðɛɡ ˈiːn/

From dau (“two”) + deg (“ten”) + un (“one”).


dau ddeg dau

dau ddeg dwy (feminine)
dau ddeg dau
ddau ddeg dau (soft)
nau ddeg dau

/ˌdaɨ̯ðɛɡ ˈdaːɨ̯/

From dau (“two”) + deg (“ten”) + dau (“two”).


dau ddeg tri

dau ddeg tair (feminine)
dau ddeg tri
ddau ddeg tri (soft)
nau ddeg tri

/ˌdaɨ̯ðɛɡ ˈtriː/

From dau (“two”) + deg (“ten”) + tri (“three”).


dau ddeg pedwar

head

dau ddeg pedwar m (feminine dau ddeg pedair)

dau ddeg pedair (feminine)
dau ddeg pedwar
ddau ddeg pedwar (soft)
nau ddeg pedwar

From dau (“two”) + deg (“ten”) + pedwar (“four”).


dau ddeg pump

dau ddeg pump
ddau ddeg pump (soft)
nau ddeg pump

/ˌdaɨ̯ðɛɡ ˈpɨ̞mp/

From dau (“two”) + deg (“ten”) + pump (“five”).


dau ddeg chwech

dau ddeg chwech
ddau ddeg chwech (soft)
nau ddeg chwech

/ˌdaɨ̯ðɛɡ ˈχweːχ/

/ˌdai̯ðɛɡ ˈχweːχ/

From dau (“two”) + deg (“ten”) + chwech (“six”).


dau ddeg saith

dau ddeg saith
ddau ddeg saith (soft)
nau ddeg saith

/ˌdaɨ̯ðɛɡ ˈsai̯θ/

/ˌdai̯ðɛɡ ˈsai̯θ/

From dau (“two”) + deg (“ten”) + saith (“seven”).


dau ddeg wyth

dau ddeg wyth
ddau ddeg wyth (soft)
nau ddeg wyth

/ˌdaɨ̯ðɛɡ ˈuːɨ̯θ/

/ˌdai̯ðɛɡ ˈʊi̯θ/

From dau (“two”) + deg (“ten”) + wyth (“eight”).


dau ddeg naw

dau ddeg naw
ddau ddeg naw (soft)
nau ddeg naw

/ˌdaɨ̯ðɛɡ ˈnaːu̯/

From dau (“two”) + deg (“ten”) + naw (“nine”).


tri deg un

tri deg un
dri deg un (soft)
nhri deg un
thri deg un

/ˌtrɪdɛɡ ˈɨːn/

From tri (“three”) + deg (“ten”) + un (“one”).


tri deg

tri deg
dri deg (soft)
nhri deg
thri deg

Twrna lleol, 56 oed; practis llwyddiannus yn y dre ers tri deg mlynedd; digon o bres.

Local solicitor, aged 56; a successful practice in the town for thirty years; enough brass.


deg a thrigain

deg a thrigain
ddeg a thrigain (soft)
neg a thrigain

/ˌdeːɡ a ˈθriːɡɛn/

/ˌdeːɡ a ˈθrɪɡɛn/

From deg (“ten”) + a (“and”) + trigain (“sixty”).


deg a phedwar ugain

deg a phedwar ugain
ddeg a phedwar ugain (soft)
neg a phedwar ugain

From deg (“ten”) + a (“and”) + phedwar (“four”) + ugain (“twenty”).


pedwar ar bymtheg a phedwar ugain

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pedwar ar bymtheg a phedwar ugain m (feminine pedair ar bymtheg a phedwar ugain)

pedair ar bymtheg a phedwar ugain (feminine)
pedwar ar bymtheg a phedwar ugain
bedwar ar bymtheg a phedwar ugain (soft)
mhedwar ar bymtheg a phedwar ugain
phedwar ar bymtheg a phedwar ugain

From pedwar (“four”) + ar (“on”) + pymtheg (“fifteen”) + a (“and”) + pedwar (“four”) + ugain (“twenty”).


cant namyn un

cant namyn un
gant namyn un (soft)
nghant namyn un
chant namyn un

From cant (“hundred”) + namyn (“save”) + un (“one”).

(cardinal number, vigesimal) ninety-nine


cant ac un

cant ac un
gant ac un (soft)
nghant ac un
chant ac un

From cant (“hundred”) + ac (“and”) + un (“one”).


naw deg naw

From naw (“nine”) + deg (“ten”) + naw (“nine”).


deuddeg ar hugain

deuddeg ar hugain
ddeuddeg ar hugain (soft)
neuddeg ar hugain

/ˈdeɨ̯ðɛɡ ar ˈhɪɡai̯n/

/ˈdei̯ðɛɡ ar ˈhɪɡɛn/

From deuddeg (“twelve”) + ar (“on”) + ugain (“twenty”).


chwedeg

(cardinal number) Nonstandard spelling of chwe deg.


pum deg

pumdegau (plural)
pum deg
bum deg (soft)
mhum deg
phum deg


wyth ar ddeugain

wyth ar ddeugain
hwyth ar ddeugain (prothesis-h)

/ˌuːɨ̯θ ar ˈðei̯ɡai̯n/

/ˌuːɨ̯θ ar ˈðei̯ɡɛn/

/ˌʊi̯θ ar ˈhɪɡɛn/

/ˌʊi̯θ ar ˈðei̯ɡɛn/

From wyth (“eight”) + ar (“on”) + deugain (“forty”).

Mae wyth morwr ar ddeugain ar y llong.


tri a deugain

head

tri a deugain m (feminine tair a deugain)

tair a deugain (feminine)
tri a deugain
dri a deugain (soft)
nhri a deugain
thri a deugain

From tri (“three”) + ac (“and”) + deugain (“forty”).

com

Heb gyfrif ei lluaws maes-drefi, saif y ddinas ei hun ar ddeugain milldir ysgwir o dir, gyda thair milldir a deugain o afon fordwyol yn rhedeg drwyddi.

Without counting its many suburbs, the city itself stands on forty square miles of land, with forty three miles of navigable river running through it.


tri deng

tri deng
dri deng (soft)
nhri deng
thri deng

Yr oedd Tywyn ei hunan yn fwy na chilomedr o’r môr yr adeg hynny. Codwyd y Promenâd Fictoraidd yn 1889 ac eto, amwynder oedd hyn yn hytrach na wal y môr ac mae’n debygol na chyrhaeddodd y môr y wal o gwbl yn ystod y tri deng mlynedd canlynol.

Tywyn itself was more than a kilometre from the sea at that time. The Victorian Promenade was built in 1889 and again, this was an amenity rather than the wall of the sea and it is likely that the sea did not reach the wall at all during the following thirty years.

(cardinal number, decimal) Alternative form of tri deg (“thirty”)


un ar bymtheg a thrigain

un ar bymtheg a thrigain
hun ar bymtheg a thrigain (prothesis-h)

/ˌɨːn ar ˈbəmθɛɡ a ˈθrɪɡai̯n/

/ˌɨːn ar ˈbəmθaɡ a ˈθrɪɡɛn/

/ˌiːn ar ˈbəmθɛɡ a ˈθriːɡɛn/

/ˌiːn ar ˈbəmθɛɡ a ˈθrɪɡɛn/

From un ar bymtheg (“sixteen”) + ac + trigain (“sixty”).

Bu farw Dr. Roger Hughes, Bala, ddydd Iau, yn un ar bymtheng a thriugain mlwydd oed.

1909 October 8, “Hyn a'r Llall”, in Llangollen Advertiser, page 7:

Dr. Roger Hughes, Bala, died on Thursday at the age of seventy six.

(cardinal number, vigesimal) seventy six


undeg saith

Modd hyn cafwyd sylw uniongyrchol undeg saith rhwng gan roddi yn faffr y tri sydd allan o gyraedd presenoli, pobl Bro Hydref ond yn llwyr gymeradwyo y mudiad yn gwneud dau ddeg yn y rheng eisoes.

(cardinal number) Nonstandard spelling of un deg saith (“twelve”).


pum ugain

(cardinal number, obsolete, vigesimal) Alternative form of pumhugain (“five score”)


pumhugain

(cardinal number, obsolete, vigesimal) one hundred, five score


pedwar deg

pedwar deg
bedwar deg (soft)
mhedwar deg
phedwar deg


pedwar deng

pedwar deng
bedwar deng (soft)
mhedwar deng
phedwar deng

(cardinal number, decimal) Alternative form of pedwar deg (“forty”)


pum deng

pum deng
bum deng (soft)
mhum deng
phum deng

(cardinal number, decimal) Alternative form of pum deg (“fifty”)


pum ar hugain

pum ar hugain
bum ar hugain (soft)
mhum ar hugain
phum ar hugain

From pum (“five”) + ar (“on”) + ugain (“twenty”).

(cardinal number, vigesimal) twenty-five (before nouns)


dau ddeg chwe

dau ddeg chwe
ddau ddeg chwe (soft)
nau ddeg chwe

/ˌdaɨ̯ðɛɡ ˈχweː/

/ˌdai̯ðɛɡ ˈχweː/

From dau (“two”) + deg (“ten”) + chwe (“six”).

(cardinal number, decimal) twenty-six (before nouns)