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”)


ail

cy-adj

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

ail (feminine singular)
ail (plural)
ail
hail (prothesis-h)

From Middle Welsh eil, from Proto-Brythonic *ėl, from Proto-Celtic *alyos, from Proto-Indo-European *h₂élyos (“other”).

yr ail lawr


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”)


gefell

cy-noun

gefell m (plural gefeilliaid, feminine gefeilles)

gefeilliaid (plural)
gefeilles (feminine)
gefell
efell (soft)
ngefell

From Middle Welsh geuell, from Proto-Brythonic *geβ̃ell, from Latin gemellus. Compare Cornish and Breton gevell.


gefeilles

gefeilles f (plural gefeilliaid, masculine gefell)

gefeilliaid (plural)
gefell (masculine)
gefeilles
efeilles (soft)
ngefeilles

/ɡɛˈvei̯ɬɛs/


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)


dwywaith

/ˈdʊɨ̯wai̯θ/


trydydd

cy-adj

trydydd (feminine singular trydedd, plural trydydd, not comparable)

trydedd (feminine singular)
trydydd (plural)
trydydd
drydydd (soft)
nhrydydd
thrydydd

From Proto-Brythonic *trɨdɨð, from Proto-Celtic *tritiyos.


cyntaf

From Middle Welsh kyntaf, from Proto-Brythonic *kɨnthaβ̃, from Proto-Celtic *kentusamos. Equivalent to cynt (“sooner, faster, earlier”) + -af.

(ordinal number) first
foremost, chief, principal


pedwerydd

pedwerydd (feminine singular pedwaredd, plural pedwerydd, not comparable)

pedwaredd (feminine singular)
pedwerydd (plural)
pedwerydd
bedwerydd (soft)
mhedwerydd
phedwerydd

/pɛdˈwɛrɨ̞ð/

From Middle Welsh pedweryd, from Old Welsh petguaret, from Proto-Brythonic *pėdwėrɨð, from Proto-Celtic *kʷetwariyos, equivalent to pedwar (“four”) + -ydd (“-th”).


pumed

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

pumed (feminine singular)
pumed (plural)
pumed
bumed (soft)
mhumed
phumed

From Proto-Brythonic *pɨmped, from Proto-Celtic *kʷenkʷetos, equivalent to pump (“five”) + -ed (“th”).


chweched

chweched (feminine singular chweched, plural chweched, not comparable, not mutable)

chweched (feminine singular)
chweched (plural)
chweched

From Proto-Brythonic *hwexed, from Proto-Celtic *swexstos, equivalent to chwech (“six”) + -ed (“th”).


seithfed

seithfed (feminine singular seithfed, plural seithfed, not comparable, not mutable)

seithfed (feminine singular)
seithfed (plural)

From Proto-Brythonic *seɨθβ̃ed, from Proto-Celtic *sextametos, equivalent to saith (“seven”) + -fed (“th”).


wythfed

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

wythfed (feminine singular)
wythfed (plural)
wythfed
hwythfed (prothesis-h)

From Proto-Brythonic *üɨθβ̃ed, from Proto-Celtic *oxtūmetos, equivalent to wyth (“eight”) + -fed (“th”).


nawfed

nawfed (feminine singular nawfed, plural nawfed, not comparable, not mutable)

nawfed (feminine singular)
nawfed (plural)

From Proto-Brythonic *nawβ̃ed, from Proto-Celtic *nawametos, equivalent to naw (“nine”) + -fed (“th”).


undeg un

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


degfed

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

degfed (feminine singular)
degfed (plural)

From Proto-Brythonic *degβ̃ed, from Proto-Celtic *dekametos, equivalent to deg (“ten”) + -fed (“-th”).


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.


unfed ar ddeg

unfed ar ddeg (feminine singular unfed ar ddeg, plural unfed ar ddeg, not comparable)

unfed ar ddeg (feminine singular)
unfed ar ddeg (plural)
unfed ar ddeg
hunfed ar ddeg (prothesis-h)

/ˌɨ̞nvɛd ar ˈðeːɡ/

From unfed (“first”) + ar (“on”) + deg (“ten”).

com

Yr unfed ar ddeg i Elïasib, y deuddegfed i Jacim,

1588-1620, “1 Cronicl 24:12”, 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_Cronicl), page 434; republished London, 1804:

the eleventh to Eliashib, the twelfth to Jakim,


deuddegfed

cy-adj

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

deuddegfed (feminine singular)
deuddegfed (plural)
deuddegfed
ddeuddegfed (soft)
neuddegfed

/deɨ̯ˈðɛɡvɛd/


trydydd ar ddeg

trydydd ar ddeg (feminine singular trydedd ar ddeg, plural trydydd ar ddeg, not comparable)

trydedd ar ddeg (feminine singular)
trydydd ar ddeg (plural)
trydydd ar ddeg
drydydd ar ddeg (soft)
nhrydydd ar ddeg
thrydydd ar ddeg

/ˌtrədɨ̞ð ar ˈðeːɡ/

/ˌtrədɪð ar ˈðeːɡ/

/ˌtrɪdɪð ar ˈðeːɡ/

From trydydd (“third”) + ar (“on”) + deg (“ten”).

com

A chan y gwelwyd yn angenrheidiol i'r cyfundeb dywededig argraphu a chyhoeddi adroddiad o'u daliadau yn gyffes o'u ffydd, am y gwelwyd fod y dywediad a arferwyd hyd hyny, fod eu daliadu neu athrawiaeth yn ol erthyg'au athrawiaethol Eglwys Loegr, yn eu hystyr Galfinaidd, yn agored i amrywiol ddëongliadau, a chan hyny (wedi ystyriaeth fanwl gan y cyfundeb trwy Ddeheudir Cymru a Gogledd Cymru) cytunwyd ar adroddiad o'u daliadau yn gyffes o'u ffydd mewn cyfarfod o'r cyfundeb a gynhaliwyd yn Aberystwyth, yn sir Aberteifi, yn Neheudir Cymru, ar y trydydd dydd ar ddeg, a'r pedwerydd ar ddeg o Fawrth, un mil wyth wyth gant a thair ar hugain, ac yn nghymdeithasfa y cyfundeb dywededig a gynnaliwyd yn y Bala, yn sir Feirionydd, yn Ngogledd Cymru, ar yr ail ar bymtheg a'r trydydd ar bymtheg o Mehefin, un mil wyth gant a thair ar hugain, heb bleidlais wahanol yn yr un o'r ddau gyfryw gyfarfodydd, a chyhoeddwyd llyfr wedi hyny yn cynnwys hanes cyfundeb y Methodistiaid Calfinaidd Cymreig a'i sefydliad, ei reolau a'i gyffes ffydd fel yn ymddangos yn amlwg wrth gyfeirlo at y llyfr dywededig a elwir Cyffes y Ffydd, &c., y corph o Fethodistiaid Calfinaidd yn Nghymru — (Gweithred gyfreithiol, hysbysol o amcanion a threfaiadau cyfundeb y Methodistiaid Calfinaidd Cymreig, a ddyddiwyd Awst 10fed, 1826.

1864 January 27, Baner ac Amserau Cymru, page 11:


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.


myrddiwn

myrddiynau (plural)
myrddiwn
fyrddiwn (soft)

From myrdd + -iwn extracted from words like miliwn (“million”).


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

head

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:


pymthegfed

cy-adj

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

pymthegfed (feminine singular)
pymthegfed (plural)
pymthegfed
bymthegfed (soft)
mhymthegfed
phymthegfed

/pəmˈθɛɡvɛd/

/pəmˈθɛɡvɛd/

From pymtheg (“fifteen”) + -fed (“-th”).


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”).

com

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

head

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

head

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

head

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”).


pedwerydd ar ddeg

cy-adj

pedwerydd ar ddeg (feminine singular pedwaredd ar ddeg, plural pedwerydd ar ddeg, not comparable)

pedwaredd ar ddeg (feminine singular)
pedwerydd ar ddeg (plural)
pedwerydd ar ddeg
bedwerydd ar ddeg (soft)
mhedwerydd ar ddeg
phedwerydd ar ddeg

/pɛdˌwɛrɨ̞ð ar ˈðeːɡ/

/pɛdˌwɛrɪð ar ˈðeːɡ/

From pedwerydd (“fourth”) + ar (“on”) + deg (“ten”).

com

Croesawyd yr aelodau i bedwaredd cyfarfod ar ddeg Cyngor y Gweithlu Addysg (CGA) gan Angela Jardine (Cadeirydd), ac fe’u hatgoffwyd mai hwn fyddai cyfarfod olaf y Cyngor cyfredol.

March 2019, “Cofnodion Pedwerydd Cyfarfod ar Ddeg Cyngoir y Gweithlu Addysg [Minutes of the Fourteenth Meeting of the Education Workforce Council]”, in (Minutes of the Education Workforce Council), archived from the original on 2022-09-02:

The members were welcomed to the fourteenth meeting of the Education Workforce Council (EWC) by Angela Jardine (Chair), and they were reminded that this would be the current council's last meeting.


unfed ar bymtheg

cy-adj

unfed ar bymtheg (feminine singular unfed ar bymtheg, plural unfed ar bymtheg, not comparable)

unfed ar bymtheg (feminine singular)
unfed ar bymtheg (plural)
unfed ar bymtheg
hunfed ar bymtheg (prothesis-h)

/ˌɨ̞nvɛd ar ˈbəmθɛɡ/

From unfed (“first”) + ar (“on”) + pymtheg (“fifteen”).


ail ar bymtheg

cy-adj

ail ar bymtheg (feminine singular ail ar bymtheg, plural ail ar bymtheg, not comparable)

ail ar bymtheg (feminine singular)
ail ar bymtheg (plural)
ail ar bymtheg
hail ar bymtheg (prothesis-h)

From ail (“second”) + ar (“on”) + pymtheg (“fifteen”).

com

1993, Nesta Lloyd, Blodeugerdd Barddas o'r Ail Ganrif ar Bymtheg [Anthology of Poetry from the Seventeenth Century], Cyhoeddiadau Barddas:


deunawfed

cy-adj

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

deunawfed (feminine singular)
deunawfed (plural)
deunawfed
ddeunawfed (soft)
neunawfed

From deunaw (“eighteen”) + -fed (“-th”).

Y ddeufed ar bymtheg i Hezir, y deunawfed i Aphses,

1588-1620, “1 Croncicl 24:15”, 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_Croncicl), page 434; republished London, 1804:

the seventeenth to Hezir, the eighteenth to Aphses


pedwerydd ar bymtheg

pedwerydd ar bymtheg (feminine singular pedwaredd ar bymtheg, plural pedwerydd ar bymtheg, not comparable)

pedwaredd ar bymtheg (feminine singular)
pedwerydd ar bymtheg (plural)
pedwerydd ar bymtheg
bedwerydd ar bymtheg (soft)
mhedwerydd ar bymtheg
phedwerydd ar bymtheg

/pɛdˌwɛrɨ̞ð ar ˈbəmθɛɡ/

/pɛdˌwɛrɪð ar ˈbəmθɛɡ/

From pedwerydd (“fourth”) + ar (“on”) + pymtheg (“fifteen”).

com

Y pedwerydd ar bymtheg i Pethahïah, yr ugeinfed i Jehesecel,

1588-1620, “1 Cronicl 24:16”, 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_Cronicl), page 434; republished London, 1804:

the nineteenth to Pethahiah, the twentieth to Jehezkel,


ugeinfed

cy-adj

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

ugeinfed (feminine singular)
ugeinfed (plural)
ugeinfed
hugeinfed (prothesis-h)


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”).


ail ar hugain

cy-adj

ail ar hugain (feminine singular ail ar hugain, plural ail ar hugain, not comparable)

ail ar hugain (feminine singular)
ail ar hugain (plural)
ail ar hugain
hail ar hugain (prothesis-h)

From ail (“second”) + ar (“on”) + ugain (“twenty”).


unfed ar hugain

cy-adj

unfed ar hugain (feminine singular unfed ar hugain, plural unfed ar hugain, not comparable)

unfed ar hugain (feminine singular)
unfed ar hugain (plural)
unfed ar hugain
hunfed ar hugain (prothesis-h)

From unfed (“first”) + ar (“on”) + ugain (“twenty”).

com

Yr unfed ar hugain i Jachin, y ddeufed ar hugain i Gamul,

1588-1620, “1 Cronicl 24:17”, 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_Cronicl), page 434; republished London, 1804:

the twenty-first to Jachin, the twenty-second to Gamul,


trydydd ar hugain

cy-adj

trydydd ar hugain (feminine singular trydedd ar hugain, plural trydydd ar hugain, not comparable)

trydedd ar hugain (feminine singular)
trydydd ar hugain (plural)
trydydd ar hugain
drydydd ar hugain (soft)
nhrydydd ar hugain
thrydydd ar hugain

From trydydd (“third”) + ar (“on”) + ugain (“twenty”).

com

Y trydydd ar hugain i Delaiah, y pedwerydd ar hugain i Maazïah.

1588-1620, “1 Cronicl 24:18”, 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_Cronicl), page 434; republished London, 1804:

the twenty-third to Delaiah, and the twenty-fourth to Maaziah.


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.


pedwerydd ar hugain

cy-adj

pedwerydd ar hugain (feminine singular pedwaredd ar hugain, plural pedwerydd ar hugain, not comparable)

pedwaredd ar hugain (feminine singular)
pedwerydd ar hugain (plural)
pedwerydd ar hugain
bedwerydd ar hugain (soft)
mhedwerydd ar hugain
phedwerydd ar hugain

From pedwerydd (“fourth”) + ar (“on”) + ugain (“twenty”).


pumed ar hugain

cy-adj

pumed ar hugain (feminine singular pumed ar hugain, plural pumed ar hugain, not comparable)

pumed ar hugain (feminine singular)
pumed ar hugain (plural)
pumed ar hugain
bumed ar hugain (soft)
mhumed ar hugain
phumed ar hugain

From pumed (“fifth”) + ar (“on”) + ugain (“twenty”).


chweched ar hugain

cy-adj

chweched ar hugain (feminine singular chweched ar hugain, plural chweched ar hugain, not comparable, not mutable)

chweched ar hugain (feminine singular)
chweched ar hugain (plural)
chweched ar hugain

/ˈʍɛχɛd ar ˈhɪɡai̯n/

From chweched (“sixth”) + ar (“on”) + ugain (“twenty”).


seithfed ar hugain

cy-adj

seithfed ar hugain (feminine singular seithfed ar hugain, plural seithfed ar hugain, not comparable, not mutable)

seithfed ar hugain (feminine singular)
seithfed ar hugain (plural)
seithfed ar hugain

From seithfed (“seventh”) + ar (“on”) + ugain (“twenty”).


wythfed ar hugain

cy-adj

wythfed ar hugain (feminine singular wythfed ar hugain, plural wythfed ar hugain, not comparable)

wythfed ar hugain (feminine singular)
wythfed ar hugain (plural)
wythfed ar hugain
hwythfed ar hugain (prothesis-h)

/ˌʊɨ̯θvɛd ar ˈhɪɡai̯n/

From wythfed (“eighth”) + ar (“on”) + ugain (“twenty”).


nawfed ar hugain

cy-adj

nawfed ar hugain (feminine singular nawfed ar hugain, plural nawfed ar hugain, not comparable, not mutable)

nawfed ar hugain (feminine singular)
nawfed ar hugain (plural)
nawfed ar hugain

From nawfed (“ninth”) + ar (“on”) + ugain (“twenty”).


degfed ar hugain

cy-adj

degfed ar hugain (feminine singular degfed ar hugain, plural degfed ar hugain, not comparable)

degfed ar hugain (feminine singular)
degfed ar hugain (plural)
degfed ar hugain
ddegfed ar hugain (soft)
negfed ar hugain

From degfed (“tenth”) + ar (“on”) + ugain (“twenty”).


unfed ar ddeg ar hugain

cy-adj

unfed ar ddeg ar hugain (feminine singular unfed ar ddeg ar hugain, plural unfed ar ddeg ar hugain, not comparable)

unfed ar ddeg ar hugain (feminine singular)
unfed ar ddeg ar hugain (plural)
unfed ar ddeg ar hugain
hunfed ar ddeg ar hugain (prothesis-h)

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


deugeinfed

cy-adj

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

deugeinfed (feminine singular)
deugeinfed (plural)
deugeinfed
ddeugeinfed (soft)
neugeinfed

2004, Cyngerdd deugeinfed pen-blwydd Côr Meibion Aberystwyth: Nos Sadwrn 23 Tachwedd [Aberystwyth Male Voice Choir's fortieth anniversary concert: Saturday 23 November]:


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

head

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


pedwerydd ar bymtheg a phedwar ugain

cy-adj

pedwerydd ar bymtheg a phedwar ugain (feminine singular pedwaredd ar bymtheg a phedwar ugain, plural pedwerydd ar bymtheg a phedwar ugain, not comparable)

pedwaredd ar bymtheg a phedwar ugain (feminine singular)
pedwerydd ar bymtheg a phedwar ugain (plural)
pedwerydd ar bymtheg a phedwar ugain
bedwerydd ar bymtheg a phedwar ugain (soft)
mhedwerydd ar bymtheg a phedwar ugain
phedwerydd ar bymtheg a phedwar ugain

/pɛdˌwɛrɨ̞ð ar ˌbəmθɛɡ a ˌfɛdwar ˈɪɡai̯n/

/pɛdˌweːrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈiːɡai̯n/

/pɛdˌwɛrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈɪɡai̯n/

/pɛdˌweːrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈiːɡɛn/

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


canfed

cy-adj

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

canfed (feminine singular)
canfed (plural)
canfed
ganfed (soft)
nghanfed
chanfed


cyntaf wedi'r cant

cyntaf wedi'r cant (feminine singular cyntaf wedi'r cant, plural cyntaf wedi'r cant, not comparable)

cyntaf wedi'r cant (feminine singular)
cyntaf wedi'r cant (plural)
cyntaf wedi'r cant
gyntaf wedi'r cant (soft)
nghyntaf wedi'r cant
chyntaf wedi'r cant

From cyntaf (“first”) + wedi (“after”) + 'r (“the”) + cant (“hundred”).


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”)


unarddegfed

cy-adj

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

unarddegfed (feminine singular)
unarddegfed (plural)
unarddegfed
hunarddegfed (prothesis-h)

[1832, William Owen Pughe, A Dictionary of the Welsh Language explained in English: with numerous illustrations from the literary remains and from the living speech of the Cymmry : To which is prefixed a Welsh grammar, Volume 1 (overall work in English), Gee, page 106:

Ond i fynd â fo cam ymhellach, model arall fyddai bod yr etholwyr yn ethol y cadeirydd, bod gennych chi 10 arweinydd, ond bod gennych chi, wedyn, unarddegfed person yn cael ei ethol gan y bobl yn yr ardal, fel bod gennych chi’r atebolrwydd clir yna.

2017 March 29, Sian Gwenllian, quotee, The Record of Proceedings: The Equality, Local Government and Communities Committee, National Assembly for Wales, section 101:

But taking it a step further, another model would be that the electorate elect the chair, that you have 10 leaders, and that you then have an eleventh person who is elected by the people in the area, so that you have that clear accountability.


eilfed

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

eilfed (feminine singular)
eilfed (plural)
eilfed
heilfed (prothesis-h)

1842, Almanac am 1842 yr hon yw yr eilfed ar ol blwyddyn y naid, a'r 6ed, o deyrnasiad ei mawrhydi Y Frenhines Victoria, Brenhines Prydain fawr a'r Ywerddon. [Almanac for 1842 which is the second after the leap year, and the 6th, of the reign of her majesty Queen Victoria, Queen of Great Britain and Ireland.], L.E. Jones:


triarddegfed

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

triarddegfed (feminine singular)
triarddegfed (plural)
triarddegfed
driarddegfed (soft)
nhriarddegfed
thriarddegfed

Cynnaliwyd triarddegfed gyfarfod blyneddol y Gymdeithas hon yn Paris, dydd Iau, yr 20fed o Ebrill.

1837, Greal y bedyddwyr neu Ystorfa efenglaidd, page 240:

The thirteenth annual meeting this Society was held in Paris on Thursday, the 20th of April.

(ordinal number, nonstandard) thirteenth


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”).

com

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


unarbymthegfed

cy-adj

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

unarbymthegfed (feminine singular)
unarbymthegfed (plural)
unarbymthegfed
hunarbymthegfed (prothesis-h)

From unarbymtheg (“16”) + -fed (“[-th]”).

[1832, William Owen Pughe, A Dictionary of the Welsh Language explained in English: with numerous illustrations from the literary remains and from the living speech of the Cymmry : To which is prefixed a Welsh grammar, Volume 1 (overall work in English), Gee, pages 106–107:

Awrgrym gair ac ymadrodd, sef llythyr, ar y degfed, ar yr unarbymthegfed, ac a yr ugeinfed, ac ar y pedairarhugeinfed.

1888 March 24, Iolo Morganwg, “Dosparth yr Awgrym”, in Y geninen cylchgrawn cenedlaethol, number Ceninen Gwyl Dewi, page 56:

Suggest a word and a phrase, namely a letter, on the tenth, on the sixteenth, and on the twentieth, and on the twenty-fourth.


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”).


ailarbymtheg ar hugain

ailarbymtheg ar hugain
hailarbymtheg ar hugain (prothesis-h)

Cyfarfu yr Ailarbymtheg ar hugain Gydgyngorfa mewn eisteddiad neillduol ar y pedwerydd o Orphenaf, yn unol â ɡalawd yr Arlywydd.

1866, John William Jones, Hanes y gwrthryfel mawr yn y Talaethau Uredig, etc. (Y gyfrol gyntaf.)., J. Mather Jones, page 232:

The thirty seventh council met in a sitting especially on the fourth of July, in accordance with the President's call.


ailarbymtheg

dichon oddeutu yr ailarbymtheg o'r mis yma

1867 July 27, “Llythyr y Parch. S. Roberts”, in Y Tyst Cymreig, page 6:

maybe around the seventeenth time this month


eilfedarbymtheg

Yr eilfedarbymtheg ydoedd William Wordsworth, a anwyd 1771; bu farw Ebrill 21, 1850.

1868 July 31, “Y Beirdd Brenhinol (Poet Laureates)”, in Y Dydd, page 11:

The seventeenth was William Wordsworth, born 1771; died April 21, 1850.


eilfed ar bymtheg

eilfed ar bymtheg (feminine singular eilfed ar bymtheg, plural eilfed ar bymtheg, not comparable)

eilfed ar bymtheg (feminine singular)
eilfed ar bymtheg (plural)
eilfed ar bymtheg
heilfed ar bymtheg (prothesis-h)

From eilfed (“second”) + ar (“on”) + pymtheg (“fifteen”).

com

1919 July 25, “Yr Eglwys a'r Piwritan yn nghanol yr Eilfed Ganrif ar Bymtheg [The Church and the Puritan in the middle of the Seventeenth Century]”, in Y Llan, page 6:


trydydd ar bymtheg

cy-adj

trydydd ar bymtheg (feminine singular trydedd ar bymtheg, plural trydydd ar bymtheg, not comparable)

trydedd ar bymtheg (feminine singular)
trydydd ar bymtheg (plural)
trydydd ar bymtheg
drydydd ar bymtheg (soft)
nhrydydd ar bymtheg
thrydydd ar bymtheg

/ˌtrədɨ̞ð ar ˈbəmθɛɡ/

/ˌtrədɪð ar ˈbəmθɛɡ/

/ˌtrɪdɪð ar ˈbəmθɛɡ/

From trydydd (“third”) + ar (“on”) + pymtheg (“fifteen”).

com

A chan y gwelwyd yn angenrheidiol i'r cyfundeb dywededig argraphu a chyhoeddi adroddiad o'u daliadau yn gyffes o'u ffydd, am y gwelwyd fod y dywediad a arferwyd hyd hyny, fod eu daliadu neu athrawiaeth yn ol erthyg'au athrawiaethol Eglwys Loegr, yn eu hystyr Galfinaidd, yn agored i amrywiol ddëongliadau, a chan hyny (wedi ystyriaeth fanwl gan y cyfundeb trwy Ddeheudir Cymru a Gogledd Cymru) cytunwyd ar adroddiad o'u daliadau yn gyffes o'u ffydd mewn cyfarfod o'r cyfundeb a gynhaliwyd yn Aberystwyth, yn sir Aberteifi, yn Neheudir Cymru, ar y trydydd dydd ar ddeg, a'r pedwerydd ar ddeg o Fawrth, un mil wyth wyth^([sic]) gant a thair ar hugain, ac yn nghymdeithasfa y cyfundeb dywededig a gynnaliwyd yn y Bala, yn sir Feirionydd, yn Ngogledd Cymru, ar yr ail ar bymtheg a'r trydydd ar bymtheg o Mehefin, un mil wyth gant a thair ar hugain, heb bleidlais wahanol yn yr un o'r ddau gyfryw gyfarfodydd, a chyhoeddwyd llyfr wedi hyny yn cynnwys hanes cyfundeb y Methodistiaid Calfinaidd Cymreig a'i sefydliad, ei reolau a'i gyffes ffydd fel yn ymddangos yn amlwg wrth gyfeirlo at y llyfr dywededig a elwir Cyffes y Ffydd, &c., y corph o Fethodistiaid Calfinaidd yn Nghymru — (Gweithred gyfreithiol, hysbysol o amcanion a threfaiadau cyfundeb y Methodistiaid Calfinaidd Cymreig, a ddyddiwyd Awst 10fed, 1826.

1864 January 27, Baner ac Amserau Cymru, page 11:


deufed ar bymtheg

cy-adj

deufed ar bymtheg (feminine singular dwyfed ar bymtheg, plural deufed ar bymtheg, not comparable)

dwyfed ar bymtheg (feminine singular)
deufed ar bymtheg (plural)
deufed ar bymtheg
ddeufed ar bymtheg (soft)
neufed ar bymtheg

From deufed (“second”) + ar (“on”) + pymtheg (“fifteen”).

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1588-1620, “1 Croncicl 24:15”, 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_Croncicl), page 434; republished London, 1804:

1747, Church of England, Ffurf gweddi, i'w harfer ym mhob eglwys a chapel trwy'r rhan honno o Brydain Fawr a elwir Lloegr, Tywysogaeth Cymru, a thref Berwig ar Dwid, ar ddydd Merchur, y deufed dydd ar bymtheg o Chwefror nesaf: yr hwn yw'r diwrnod a ordeiniwyd trwy gyhoeddiad i fod yn ympryd a darostyngiad cyffredinol yng ngwydd yr Hollalluog Dduw, ac i'w gadw yn y modd mwyaf defosiynol ac arbennig, trwy ddyrchafu ein gweddiau a'n hymbiliau at y Dwywol Fawredd : er cael o honom faddeuant o'n pechodau, a throi heibio y barnedigaethau trymmion a ddarfu i ni, o achos ein hamrywjol gynhyrfiadau, o wîr gyfiawnder eu haeddu ; ac i erfyn am ei fendith a'i gymmorth ar arfau Ei Fawrhydi, ac am adferu a hir-barhâu tangnefedd, diogelwch, a llwyddiant iddo ei hunan, ac i'w deyrnasoedd ef : trwy orchymmyn pendant Ei Fawrhydi [A form of prayer, to be practiced in every church and chapel throughout that part of Great Britain called England, the Principality of Wales, and the town of Berwick-upon-Tweed, on Wednesday, the seventeenth day of February next: which is the day ordained by proclamation to be a general fast and humiliation in the presence of Almighty God, and to be kept in the most devout and special way, by raising our prayers and supplications to the Divine Majesty: to obtain from us forgiveness from our sins, and turn past the heavy judgments that have happened to us, because of our various agitations, from the true justice of deserving them; and to beg for his blessing and help on His Majesty's arms, and for the restoration and long-lasting peace, security, and success for himself, and for his kingdoms: by His Majesty's definite command], Tomas Basged:


ddeufed ar hugain

cy-adj

ddeufed ar hugain (feminine singular ddwyfed ar hugain, plural ddeufed ar hugain, not comparable, not mutable)

ddwyfed ar hugain (feminine singular)
ddeufed ar hugain (plural)

From ddeufed (“second”) + ar (“on”) + ugain (“twenty”).

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1588-1620, “1 Cronicl 24:17”, 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_Cronicl), page 434; republished London, 1804:


ddwyfed ar bymtheg

/ˌðʊɨ̯vɛd ar ˈbəmθɛɡ/

/ˌðʊi̯vɛd ar ˈbəmθɛɡ/

From ddwyfed (“second”) + ar (“on”) + pymtheg (“fifteen”).

Pa fodd yr ydych yn profi hyny? Trwy y ddwyfed ar bymtheg a'r ddeunawfed wahanran.

1851, Joseph Smith, translated by John Davis, Llyfr athrawiaeth a chyfammodau perthynol i Eglwys Iesu Grist o saint y dyddiau diweddaf., Merthyr Tydfil, page 41:

How do you prove that? Through the seventeenth and eighteenth divisions.


cyfanrif

cyfanrifau (plural)
cyfanrif
gyfanrif (soft)
nghyfanrif
chyfanrif

cyfan (“whole, entire”) + rhif (“number”)


hecsagon

cy-noun

hecsagon m (plural hecsagonau, not mutable)


hecsagonol

cy-adj

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

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


pum ugain

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


pumhugain

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


trigeinfed

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

trigeinfed (feminine singular)
trigeinfed (plural)
trigeinfed
drigeinfed (soft)
nhrigeinfed
thrigeinfed

From tri (“three”) + ugeinfed (“twentieth”).


deuddegfed ar hugain
deuddegfed ar hugain#Welsh

Abbreviation of deuddegfed ar hugain: 32nd


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”).

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(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)