[ˌɬan.vai̯r.pʊɬˌɡwɨ̞n.ɡɨ̞ɬ.ɡɔˌɡɛr.əˌχwɨ̞rnˌdrɔ.bʊɬˌɬan.təˌsɪl.jɔˌɡɔ.ɡɔˈɡoːχ]

[ˌɬan.vai̯r.pʊɬˌɡwɪn.ɡɪɬ.ɡɔˌɡɛr.əˌχwɪrnˌdrɔ.bʊɬˌɬan.təˌsɪl.jɔˌɡɔ.ɡɔˈɡoːχ]

Cy-Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch (Welsh pronunciation, recorded 17-05-2012).ogg

Llan fair pwll gwyn gyll go ger y chwyrn dro bwll llan ty si lio go go goch

Composed of:
* llan (“parish, church”)
* Fair, soft mutation of Mair (“(Saint) Mary”)
* pwll (“pool”)
* gwyn (“white”)
* gyll, soft mutation of cyll (“hazel”)
* go ger (“near about”)
* y (“the”)
* chwyrn (“fierce”)
* drobwll, soft mutation of trobwll (“whirlpool”), from tro (“turn”) + pwll (“pool”)
* llan (“parish, church”)
* Tysilio (“(Saint) Tysilio”)
* -g- (consonantal infix)
* ogo, dialectal form of ogof (“cave”)
* goch, soft mutation of coch (“red”)
Literally, “Saint Mary’s Church in the hollow of the white hazel near the rapid whirlpool and the Church of Saint Tysilio of the red cave”.

lit

Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch (a village in Anglesey, Wales, United Kingdom, known for having the longest place name in Europe, and the longest English-language (albeit borrowed from Welsh) settlement name in the world)


Llangollen

Llangollen (a small town in Denbighshire, Wales)


Aberteifi

From aber (“estuary, mouth”) + Teifi (“(River) Teifi”); literally "mouth of the river Teifi".

compound

Cardigan (a town in Ceredigion borough county borough, Wales)


Y Trallwng

From trallwng (“dirty pool, boggy spot”), from tra- + llwng.

Welshpool (a town and community with a town council in Powys, Wales, in the historic county of Montgomeryshire (OS grid ref SJ2207))


Casnewydd

Casnewydd
Gasnewydd (soft)
Nghasnewydd
Chasnewydd

/ˌkaːsˈnɛu̯ɨ̞ð/

/ˌkaːsˈnɛu̯ɪð/

Newport (a city and unitary authority of Monmouthshire)


Llanelli

From llan (“church”) + Elli (“Saint Elli”)

Llanelli (a town and community of Carmarthenshire)


Caerdydd

Caerdydd
Gaerdydd (soft)
Nghaerdydd
Chaerdydd

/kaɨ̯rˈdɨːð/

From Middle Welsh Caerdyf. Equivalent to caer (“fort”) + Taf (“[River] Taff”); literally "fortified city on the River Taff".
The change from final /v/ to /ð/ is a local pronunciation, postdating the name being borrowed into English.

Cardiff (a city and county, the capital and largest city of Wales)


Powys

→ English: Powys

From Middle Welsh Powys, from Old Welsh Pouos, generally derived from Latin pagēnsis (“provincial”), from pagus (“canton, province”). Cognate with Italian paese and French pays (“country”).

Powys (a county and preserved county of Wales)


Sir Frycheiniog

Brecknockshire (a traditional county of Wales)


Aberystwyth

aber (“river mouth”) + Ystwyth (river name)

Aberystwyth (a coastal town and community with a town council in Ceredigion, Wales (OS grid ref SN5881))


Bangor

Bangor (a city and community with a city council in Gwynedd, Wales (OS grid ref SH5872))


Gwynedd

From Middle Welsh Guynet, from Old Irish, cognate with either Féni (“Irish People”), from Proto-Indo-European *weydʰ- (“wood, wilderness”); or fían (“war band”) (from Proto-Indo-European *weyh₁- (“chase, pursue, suppress”)).

der

Gwynedd (a historical kingdom of Wales, in the north of the country)

Gwynedd (a county of Wales, in the north-west of the country)


Conwy

English: Conwy

English: Conway

From Old Welsh Cynwy, from cyn- (“chief, foremost”) + gwy (“water”) (a noun whose existence is disputed, but see Gwy).

Conwy County Borough
Conwy County Borough#English

Conwy (a town in Conwy County Borough, North Wales)


Abertawe

From aber (“estuary, mouth”) + Tawe (“(River) Tawe”); literally "mouth of the river Tawe".

compound

Swansea (a town and county borough of Wales)


Ynys Môn

→ English: Ynys Môn, Ynys Mon

→ Faroese: Ynys Môn

Proto-Celtic *Monā (Latin Mona).
Cognate with the Celtic names of other isles, from Proto-Celtic *moniyos (related to Welsh mynydd, Cornish menydh, Breton menez), from Proto-Indo-European *men- (“to tower, stand out”) (compare Latin mōns).

der

Anglesey (an island, traditional county, and unitary authority of Wales)


Libanus

Borrowed from Latin Libanus, from Ancient Greek Λίβανος (Líbanos), from a Semitic source.

a village in Powys borough county borough, South Wales


Trefynwy

Trefynwy
Drefynwy (soft)
Nhrefynwy
Threfynwy

/trɛˈvənʊɨ̯/


Morgannwg

From its eponymous founder Morgan Hen + -wg.

Glamorgan (a traditional county in southern Wales)


Ceredigion

From Ceredig ap Cunedda, 5th-century king.


Rhondda

Y Rhondda (canonical)
Rhondda
Rondda (soft)

corresponding to the full name Y Rhondda

Rhondda (a former coal-mining valley in South Wales)

Rhondda Cynon Taf
Rhondda Cynon Taf#English

Rhondda (a river in Rhondda Cynon Taf borough county borough, South Wales with two main tributaries, Rhondda Fawr and Rhondda Fach)


Bro Morgannwg

Bro Morgannwg
Fro Morgannwg (soft)
Mro Morgannwg

Vale of Glamorgan
Vale of Glamorgan#English

Vale of Glamorgan (a county borough of South Wales)


Bala

Y Bala (canonical feminine)
Bala
Fala (soft)
Mala

Bala (a small town and community with a town council in Gwynedd, Wales)


Llandeilo

From llan (“church”) + Teilo, named for Saint Teilo.

Llandeilo (a small town in Carmarthenshire, Wales (OS grid ref SN6322))


Berwyn

y Berwyn (canonical masculine)
Berwyn
Ferwyn (soft)
Merwyn

a locality and railway station on a heritage railway in Llangollen community, Denbighshire, Wales (OS grid ref SJ1943)


Nedd

English: Neath

Neath Port Talbot
Neath Port Talbot#English

Neath (a river in Neath Port Talbot borough county borough)


Teifi

Of Brythonic origin, probably from the same root as Tafwys and possibly also Thames. Also compare the names Tamar, Tavy, Towy, Teviot, Tweed, Taw, Tiverton.

A river that forms the boundary between Ceredigion and Carmarthenshire


Hafren

From Old Welsh Habren, from Proto-Brythonic *Haβren, from Proto-Celtic *Sabrinā. Compare Irish Sabhrainn.


Dyfrdwy

Of Brythonic origin. Equivalent to dwfr (“water”) + dwyw (“god”).


Efyrnwy

Vyrnwy (a river in Powys, Wales and Shropshire, England)


Wysg

From Middle Welsh Wysk, from Proto-Brythonic *Uɨsk, from Proto-Celtic *ɸeiskos (“fish”); cognate with Irish iasc (“fish”).

Usk (a river in Powys and Monmouthshire, Wales, that empties into the Severn at Newport)


Ogwr

Ogmore (a village in the Vale of Glamorgan borough county borough)

Ogmore (a river in Bridgend borough county borough)


Llwchwr

→ English: Loughor, Llwchwr

Loughor (a river in Carmarthenshire, and the city and county of Swansea, southern Wales)


Caernarfon

Caernarfon
Gaernarfon (soft)
Nghaernarfon
Chaernarfon

a port town in Gwynedd, Wales, the location of a castle and a high proportion of Welsh speakers (OS grid ref SH4862).


Porthmadog

Porthmadog
Borthmadog (soft)
Mhorthmadog
Phorthmadog

porth (“port”) + Madog (given name). Calque of English Portmadoc, from port + Madocks (surname).

Porthmadog (a small coastal town and community with a town council in Gwynedd, Wales (OS grid ref SH5638))


Aberdâr

From aber (“estuary, mouth”) + Dâr (“(River) Dare”); literally "mouth of the river Dare".

compound

Aberdare (a town in Rhondda Cynon Taf borough county borough, Wales)


Aberdaugleddau

/ˌabɛrdaɨ̯ˈɡlɛðaɨ̯/

/ˌabɛrdaɨ̯ˈɡlɛðɛ/

From aber (“estuary, mouth”) + dau (“two”) + Cleddau (“(River) Cleddau”); literally "mouth of the two Cleddaus" in reference to meeting point of the Cleddau Wen (“White Cleddau River”) and Cleddau Ddu (“Black Cleddau River”).

Milford Haven (a town in Pembrokeshire, Wales)


Port Talbot

Port Talbot
Bort Talbot (soft)
Mhort Talbot
Phort Talbot

Port Talbot (a town in Neath Port Talbot borough county borough, Wales)


Tywyn

Tywyn (a coastal town in Gwynedd, Wales) (OS grid ref SH5800).

Towyn (a coastal town in Conwy County Borough, Wales) (OS grid ref SH974794).


Llandudno

From llan (“parish, church”) + Dudno, soft mutation of Tudno (“(saint) Tudno”).

a coastal town in Conwy borough county borough, Wales (OS grid ref SH7882).


Rhyl

Unknown. See w:Rhyl § Etymology for a variety of hypotheses.

Rhyl (a coastal town and community of Denbighshire)


Pwllheli

Pwllheli
Bwllheli (soft)
Mhwllheli
Phwllheli

From pwll ("pool") + heli ("saltwater, brine")

Pwllheli (a market town in Gwynedd, Wales)


Llanidloes

From llan (“church”) + Idloes (given name).

Llanidloes (a small town and community with a town council in Powys, Wales (OS grid ref SN9584))


Pontarddulais

Pontarddulais
Bontarddulais (soft)
Mhontarddulais
Phontarddulais

Originally 'Pontardulais', pont (“bridge”) + aber (“mouth”) + Dulais (“(River) Dulais”), misunderstood in the 20th century as pont (“bridge”) + ar (“on”) + Dulais (“(River) Dulais”) (an example of folk etymology).

com

Pontarddulais (a town and community with a town council in the city and county of Swansea, Wales) (OS grid ref SN5903).


Penarth

Penarth
Benarth (soft)
Mhenarth
Phenarth

From pennarth (“promontory”), but associated by folk etymology with pen arth (literally “bear’s head”).

Penarth (a town in the Vale of Glamorgan borough county borough)


Penrhyndeudraeth

From penrhyn (“peninsula, headland”) + dau (“two”) + traeth (“beach, shore”).

Penrhyndeudraeth (a small town and community with a town council in Gwynedd, Wales)


Pontypridd

Pontypridd
Bontypridd (soft)
Mhontypridd
Phontypridd

From pont (“bridge”) + y (“the”) + tŷ (“house”) + pridd (“earth[en]”).

af

Pontypridd (a town in Rhondda Cynon Taf borough county borough)


Abergwaun

From aber (“estuary, mouth”) + Gwaun (“(River) Gwaun”); literally "mouth of the river Gwaun".

compound

Fishguard (a town in Pembrokeshire borough county borough, Wales)


Aberhonddu

From aber (“estuary, mouth”) + Honddu (“(River) Honddu”); literally "mouth of the river Honddu".

Brecon (a town and community with a town council in Powys, Wales (OS grid ref SO0428))


Abermaw

From aber (“estuary, mouth”) + Mawddach (“(River) Mawddach”); literally "mouth of the river Mawddach".

Barmouth (a town in Gwynedd borough county borough, Wales)


Bermo

From Abermaw, from aber (“estuary, mouth”) + Mawddach (“(River) Mawddach”); literally "mouth of the river Mawddach".

(colloquial) Barmouth (a town in Gwynedd borough county borough, Wales)


Aberaeron

From aber (“estuary, mouth”) + Aeron (“(River) Aeron”); literally "mouth of the river Aeron".

Aberaeron (a town in Ceredigion borough county borough, Wales)


Aberafan

From aber (“estuary, mouth”) + Afan (“(River) Afan”); literally "mouth of the river Afan".

Aberavon (a town in Neath Port Talbot borough county borough, Wales)


Nantlle

→ Breton: Nantlle

→ English: Nantlle

→ French: Nantlle

Said to be a corruption of nant Lleu (literally “Lleu’s brook”).

Nantlle (a village in Llanllyfni community, Gwynedd, Wales, the United Kingdom, OS grid ref SH5053)


Eryri

From eryri (“uplands”), plural of eryr (“bank, rise, ridge”).

Snowdonia (A mountainous region and national park in North Wales, United Kingdom)


Caerffili

Caerffili
Gaerffili (soft)
Nghaerffili
Chaerffili

From caer (“fort”) + Ffili (“personal name”); literally "Ffili's fort". Possibly from Old Irish fili (“seer, poet”).

Caerphilly (a town in Caerphilly borough county borough)


Brynmawr

Brynmawr (a market town and community with a town council in Blaenau Gwent borough county borough, Wales) (OS grid ref SO1911).


Dolgellau

/dɔlˈɡɛɬaɨ̯/

/dɔlˈɡɛɬai̯/

Dolgellau (a small town and community with a town council in Gwynedd, Wales, historically the county town of Merionethshire (OS grid ref SH7317))


Abergele

/ˌabɛrˈɡɛlɛ/

/ˌabɛrˈɡɛlɛ/

aber (“river mouth, estuary”) + Gele (“minor local river”)

com

a small market town and community with a town council in Conwy borough county borough, Wales (OS grid ref SH9477).


Caerfyrddin

Caerfyrddin
Gaerfyrddin (soft)
Nghaerfyrddin
Chaerfyrddin

caer + Myrddin, from Proto-Celtic *Mori-dūnom (Latin Moridūnum), from *mori (“sea”) (whence môr) + *dūnom (“fort”) (whence din).

Carmarthen, a town in and the county town of Carmarthenshire, Wales (OS grid ref SN4120).


Castell-nedd

Castell-nedd
Gastell-nedd (soft)
Nghastell-nedd
Chastell-nedd

castell (“castle”) + Nedd (“River Neath”)

Neath (a town in Neath Port Talbot borough county borough, Wales, United Kingdom)


Barri

Y Barri (canonical masculine)
Barri
Farri (soft)
Marri

Barry (a town and community of the Vale of Glamorgan borough county borough)


Llansamlet

a suburb and community (without a community council) in the city and county of Swansea, Wales


Betws Garmon

→ Basque: Betws Garmon

→ Breton: Betws Garmon

→ Cebuano: Betws Garmon

→ Cornish: Betws Garmon

→ English: Betws Garmon

→ French: Betws Garmon

→ Irish: Betws Garmon

→ Scottish Gaelic: Betws Garmon

→ Swedish: Betws Garmon

Betws Garmon
Fetws Garmon (soft)
Metws Garmon

Betws Garmon (a village in the community of the same name of Gwynedd, Wales, the United Kingdom, OS grid ref SH5357)

(fully Cymuned Betws Garmon f) Betws Garmon Community (a community of Gwynedd, Wales, the United Kingdom)


Clydach

From a Proto-Celtic root meaning "flow strongly".

Clydach (a village in Llanelly community, Monmouthshire, Wales) (OS grid ref SO2312).

Clydach (a large village and community in the City and County of Swansea, Wales) (OS grid ref SN6901).

Clydach (a short river in Monmouthshire, which joins the River Usk)

Clydach (a river in Neath Port Talbot borough county borough, Wales, which joins the River Neath)


Llanfair-Mathafarn-Eithaf

Literally, “parish of the field of the furthest tavern”.

lit

a community (civil parish) in Anglesey, Wales


Llanbedrgoch

Univerbation of llan + Pedr + coch, literally, “Red Parish of St. Peter”.

a village in Llanfair-Mathafarn-Eithaf community, Anglesey, Wales (OS grid ref SH5180).


Llangefni

From llan (“church”) + Cefni (river name).

Llangefni (the county town and community with a town council in Anglesey, Wales (OS grid ref SH4575))


Cas-gwent

Chepstow (a town in Monmouthshire, Wales)


Esgairgeiliog

From esgair (“ridge, esker”) + ceiliog (“cockerel”).

com

a small village in Glantwymyn community, Powys, Wales, historically in Montgomeryshire (OS grid ref SH7506).


Abererch

Univerbation of aber (“estaury”) + Erch, being at the mouth of the Afon Erch, as the village once was before changes in the coastline.

a village in Llannor community, Gwynedd, Wales (OS grid ref SH3936).


Caergwrle

Caergwrle
Gaergwrle (soft)
Nghaergwrle
Chaergwrle


Gwersyllt

/ˈɡwɛrsɨ̞ɬd/

[ˈɡwɛrsɨ̞ɬt]

Possibly from a variant form of gwersyll (“encampment”) or a Welsh adaptation of an earlier English name.

Gwersyllt (a large village and community in Wrexham borough county borough, Wales)


Pentir

a community and small village in Gwynedd, Wales (OS grid ref SH5767).


Tonypandy

Tonypandy
Donypandy (soft)
Nhonypandy
Thonypandy

From ton (“lea, pasture”) + y (“the”) + pandy (“fulling mill”).

af

Tref yng Nghwm Rhondda yw Tonypandy.

Tonypandy is a town in the Rhondda Valley.

Es i i Donypandy ddoe.

Mae e'n gweithio mewn ffatri yn Nhonypandy.

Tonypandy (a town in Rhondda Cynon Taf, Wales)


Llanymddyfri

llan (“parish, church”) + ymhlith/ymysg (“among, amid”) + dyfroedd (“waters”) (plural of dwfr, dŵr).

Llandovery (a town in Carmarthenshire, Wales)


Penmynydd

Univerbation of pen (“summit”) + mynydd (“mountain”), literally, “mountain top”.


Dolbadarn

Univerbation of dôl (“meadow”) + Padarn, soft mutation of Padarn (“(saint) Padarn”).


Dolwyddelan

Dolwyddelan
Ddolwyddelan (soft)
Nolwyddelan

dôl (“meadow”) + Wyddelan (“personal name”)


Ystum Llwynarth

→ English: Oystermouth

Ystum Llwynarth
Hystum Llwynarth (prothesis-h)
Ystumllwynarth (alternative)

ystum (“curve, meander”) + llwyn (“bush, grove”) + garth (“wooded slope”)

Oystermouth (a coastal suburb in the city and county of Swansea, Wales) (OS grid ref SS6188).


Mwmbwls

Mumbles (a coastal suburb, a community and headland (Mumbles Head) in the City and County of Swansea, Wales) (OS grid ref ST6188).


Cwmbwrla

cwm (“coombe, valley”) + Bwrla (“Bwrla”).

a community in the city and county of Swansea, Wales


Glannau Dyfrdwy

glannau (“banks, shores”) + Dyfrdwy (“River Dee”)

Deeside (a conurbation in England and Wales)


Bwrdeistref Sirol Conwy

Conwy County Borough (a county borough of Wales)


Porth Tywyn

porth (“port, harbour”) + tywyn (“sand dune”)

Burry Port (a small coastal town in Carmarthenshire, Wales) (OS grid ref SN4400).


Hendy-gwyn

hen (“old”) + tŷ (“house”) + gwyn (“white”).

Whitland (a small town in Carmarthenshire, Wales) (OS grid ref SN2016).


Wrecsam

Wrexham (a town in Wrexham borough county borough, in northeastern Wales, United Kingdom)

Wrexham (a county borough in northeastern Wales, United Kingdom)


Castell-nedd Port Talbot

Neath Port Talbot (a county borough and unitary authority in South Wales)


Llandecwyn

llan (“church”) + Tecwyn (“Tecwyn, a 6th century saint”)


Cwmgwrach

Cwmgwrach
Gwmgwrach (soft)
Nghwmgwrach
Chwmgwrach

a village in Blaengwrach community, Neath Port Talbot borough county borough, Wales


Llanllyfni

→ Basque: Llanllyfni

→ Breton: Llanllyfni

→ Catalan: Llanllyfni

→ Cebuano: Llanllyfni

→ Cornish: Llanllyfni

→ English: Llanllyfni

→ French: Llanllyfni

→ Irish: Llanllyfni

→ Italian: Llanllyfni

→ Scottish Gaelic: Llanllyfni

→ Swedish: Llanllyfni

llan (“settlement with a church”) + Llyfni (hydronym)

compound

Llanllyfni (a village in the community of the same name of Gwynedd, Wales, the United Kingdom, OS grid ref SH4751)

(fully Cymuned Llanllyfni f) Llanllyfni Community (a community of Gwynedd, Wales, the United Kingdom)


Iâl

→ English: Yale

From iâl (“clearing, cultivated upland”).

(historical) a commote of medieval Wales within the cantref of Maelor in the Kingdom of Powys


Bannau Brycheiniog

Bannau Brycheiniog
Fannau Brycheiniog (soft)
Mannau Brycheiniog

From bannau (“peaks”) + Brycheiniog (“(of) Brycheiniog, a medieval Welsh kingdom in the area named after king Brychan”).

Brecon Beacons (a mountain range and national park in Wales)


Caergybi

Caergybi
Gaergybi (soft)
Nghaergybi
Chaergybi

/kaɨ̯rˈɡəbɪ/

From caer (“fort”) + Cybi (“Saint Cybi”).


Ynys Gybi

/ˌənɨ̞s ˈɡəbɪ/

[ˌənɨ̞sˈkəbɪ]

/ˌənɪs ˈɡəbi/

LL-Q9309 (cym)-Rhosyr358-Ynys Gybi (Q1831562).wav

Holy Island (an island off the coast of Anglesey, Wales)


Tyddewi

Tyddewi
Dyddewi (soft)
Nhyddewi
Thyddewi

/tɨ̞ˈðɛu̯.ɪ/

From tŷ (“house (of)”) + Dewi (“[Saint] David”).

af

St Davids (a city in Pembrokeshire, Wales)


Brynbuga

Uncertain. The first element, bryn, means "hill" but the meaning of the second element is contested.


Tonyrefail

Tonyrefail
Donyrefail (soft)
Nhonyrefail
Thonyrefail

From ton (“lea, pasture”) + yr (“the”) + gefail (“forge, smithy”).

Dyw hi ddim yn hoffi byw yn Nhonyrefail.

a village and community of Rhondda Cynon Taf borough county borough, Wales


Rhydaman

From rhyd (“ford”) + Aman (“River Amman”).

Ammanford (a town in Carmarthenshire, Wales)


Sir Gaerfyrddin

/ˌʃiːr ɡərˈvərðɪn/

/ˌʃiːr ˈɡvərðɪn/

a maritime traditional county of Wales, bordered by Morgannwg (“Glamorgan”), Sir Frycheiniog (“Brecknockshire”), Ceredigion (“Cardiganshire”) and Sir Benfro (“Pembrokeshire”).


Pen-y-bont ar Ogwr

Pen-y-bont ar Ogwr
Ben-y-bont ar Ogwr (soft)
Mhen-y-bont ar Ogwr
Phen-y-bont ar Ogwr

Literally, “end of the bridge on the Ogmore”

lit

Bridgend (a town and community with a town council in Bridgend borough county borough, Wales (OS grid ref SS9080))

Bridgend (a county borough in Wales which includes the town)


Pen-y-bont

Pen-y-bont
Ben-y-bont (soft)
Mhen-y-bont
Phen-y-bont

Pen-y-bont ar Ogwr
Pen-y-bont ar Ogwr#Welsh

short for Pen-y-bont ar Ogwr: Bridgend (a town and county borough of Wales)

Pen-y-bont ar Ogwr

a village near Llandovery, Carmarthenshire


Cwmbrân

Cwmbrân
Gwmbrân (soft)
Nghwmbrân
Chwmbrân

Cwmbran (a new town in Torfaen borough county borough, Monmouthshire, Wales)


Merthyr Tudful

/ˌmɛrθɨ̞r ˈtɨ̞dvɨ̞l/

Merthyr Tydfil (a large town in Merthyr Tydfil borough county borough)

Merthyr Tydfil (a county borough of Wales)


Bae Colwyn

/ˌbaːɨ̯ ˈkɔlwɨ̞n/

Colwyn Bay (a town, community, and beach resort in Conwy borough county borough)


Pont-y-pŵl

English: Pontypool

Pont-y-pŵl
Bont-y-pŵl (soft)
Mhont-y-pŵl
Phont-y-pŵl

From pont (“bridge”) + y (“(of the)”) + English pool. (The word pŵl refers to the game of pool or to a pool in gambling, not to a pool of water, which is pwll.)

af

Pontypool (a town in Torfaen borough county borough)


Aberdyfi

From aber (“river mouth”) + Dyfi (“River Dovey”).

Aberdovey (a coastal village in Gwynedd, Wales (OS grid ref SN6196))


Penrhyn Llŷn

Penrhyn Llŷn
Benrhyn Llŷn (soft)
Mhenrhyn Llŷn
Phenrhyn Llŷn
Pen Llŷn (alternative)

Llŷn Peninsula (a peninsula in North Wales)


Arfordir Penfro

Arfordir Penfro
Harfordir Penfro (prothesis-h)

Pembrokeshire Coast
Pembrokeshire Coast#English

Pembrokeshire Coast (A stretch of seacoast and national park in Pembrokeshire, Wales.)


Penfro

From Proto-Brythonic *Penn-broɣ (literally “land's head, land's end”). By surface analysis, pen (“head”) + bro (“region”). Cognate with English Pembroke.

surf

Pembroke (a town in Pembrokeshire, Wales)

(historical) Pembroke (a cantref in the kingdom of Dyfed, later Deheubarth, in South Wales)


Doc Penfro

Doc Penfro
Ddoc Penfro (soft)
Noc Penfro

Pembroke Dock (a harbour town in Pembrokeshire, Wales)


Sir Benfro

Pembrokeshire (a maritime traditional county of Wales)


Sir Fynwy

Monmouthshire, a maritime traditional county of Wales, bordered by to the east by Gloucestershire, to the northeast by Herefordshire, to the north by Brecknockshire, to the west by Glamorganshire and to the south by the Bristol Channel. It was part of England until renamed Gwent and taken into Wales in 1974.

Monmouthshire, A county and local government principal area of Wales which replaced Gwent, bordered by the Forest of Dean, Herefordshire, Powys, Blaenau Gwent, Torfaen and Newport.


Dinbych

Univerbation of din + bych. Literally, “Little Fort”.

Denbigh (a market town and community with a town council in Denbighshire, Wales) (OS grid ref SJ0566).


Dinbych-y-pysgod

Dinbych y pysgod (canonical masculine)
Dinbych-y-pysgod
Ddinbych-y-pysgod (soft)
Ninbych-y-pysgod

Tenby (a coastal town in Pembrokeshire, Wales) (OS grid ref SN1300).


Sir Ddinbych

Denbighshire (a maritime traditional county of Wales)


Caerllion

English: Caerleon

Caerllion
Gaerllion (soft)
Nghaerllion
Chaerllion
Caerllion-ar-Wysg (alternative)

From caer (“fort”) + uncertain second element, possibly lleng (“(Roman) legion”).

Caerleon (a town and community in the city of Newport, Wales (OS grid ref ST3390))


Glynebwy

Glynebwy
Lynebwy (soft)
Nglynebwy
Glyn Ebwy (alternative)

/ɡlɨ̞nˈɛbuɨ̯/

Ebbw Vale (a town in Blaenau Gwent borough county borough, Wales (OS grid ref SO1609))


Fflint

From English Flint, from the common noun flint.

Flint (a town and community with a town council in Flintshire, Wales, by the estuary of the River Dee (OS grid ref SJ2472))


Yr Wyddgrug

/ər ˈuɨ̯ðɡrɨ̞ɡ/

/ər ˈui̯ðɡrɪɡ/

From yr (“the”) + Middle Welsh gwyð (“grave, burial mound”) + crug (“cairn, tumulus”).

der

Mold (a town and community in and the county town of Flintshire, Wales (OS grid ref SJ2364))


Trefaldwyn

Trefaldwyn
Drefaldwyn (soft)
Nhrefaldwyn
Threfaldwyn

Montgomery (a town and community with a town council in Powys, Wales, formerly the county town of Montgomeryshire (OS grid ref SO2296))


Y Drenewydd

/ə drɛˈnɛu̯ɨ̞ð/

/ə drɛˈnɛu̯ɪð/

From y (“the”) + tre(f) (“town”) + newydd (“new”).

Newtown and Llanllwchaiarn
Newtown and Llanllwchaiarn#English

Newtown (a town in Newtown and Llanllwchaiarn community, Powys (OS grid ref SO1191))


Y Bont-faen

From y (“the”) + pont (“bridge”) + maen (“stone”).

Cowbridge with Llanblethian
Cowbridge with Llanblethian#English

Cowbridge (a market town in Cowbridge with Llanblethian community, Vale of Glamorgan borough county borough, Wales (OS grid ref SS9974))


Hwlffordd

Alteration of English Harford, the traditional pronunciation of Haverford.

Haverfordwest (a town and community in and the county town of Pembrokeshire, Wales (OS grid ref SM9515))


Machno

the Afon Machno (a river in Conwy borough county borough, Wales, a tributary of the Afon Conwy)


Sydallt

→ English: Sydallt

Sydallt (a village in Gwersyllt community, Wrexham borough County Borough, Wales, the United Kingdom)


Drws-y-coed

→ English: Drws-y-coed

Drws-y-coed
Ddrws-y-coed (soft)
Nrws-y-coed

Drws-y-coed (a village in Llanllyfni community, Gwynedd, Wales, the United Kingdom, OS grid ref SH5453)


Sir y Fflint

Flintshire, a maritime traditional county of Wales


Sir Drefaldwyn

Montgomeryshire, an inland traditional county of Wales