blas.blas.
HomeArchiveResearch
Tables
blas.blas.

cwm

valley

NounMasculine (gwrywaidd)C1/kʊm/

"cwm" means "valley" in Welsh (masculine noun). Pronounced /kʊm/. Mutation forms: Treiglad Meddal → gwm, Treiglad Trwynol → nghwm, Treiglad Llaes → chwm.

Mutation forms

In Welsh, the first letter of "cwm" changes depending on the grammatical context. These are the mutated forms:

MutationForm
Base formcwm
Treiglad Meddalgwm
Treiglad Trwynolnghwm
Treiglad Llaeschwm

"cwm" in context

Drwy gydol ein bywydau, mae ein llwybrau wedi cwrdd a chroesi dros drefi a phentrefi'r cwm yr oedd y ddau ohonom ni'n ei garu.

Throughout our lives, our paths have met and criss-crossed over the towns and villages of the valley we both loved.

C1

Mae'n ddrwg iawn gen i ein bod ni wedi eich colli chi, Hefin, ond yn y Senedd hon, ac ar draws ein cwm, bydd hiraeth ar eich ô, ac rwy'n dymuno heddwch i chi, heddwch perffaith.

I am so sorry that we've lost you, Hefin, but in this Senedd, and across our valley, you will be missed, and I wish you peace, perfect peace.

C1

Mewn tri bwrdd iechyd— Cwm Taf Morgannwg, Bae Abertawe a Phowys—nid oes unrhyw un bellach yn aros mwy na dwy flynedd am wasanaethau offthalmoleg.

Three health boards—Cwm Taf Morgannwg, Swansea Bay and Powys—now have no-one waiting more than two years for ophthalmology.

B2

Further reading

Welsh Mutations Explained — Soft, Nasal & Aspirate →Welsh Pronunciation — It's Actually Easier Than English →How to Learn Welsh as an Adult — A Step-by-Step Roadmap →Best Apps to Learn Welsh (2026) →Browse all Welsh vocabulary →

Learn "cwm" and 3,000+ Welsh words

blas. teaches vocabulary with spaced repetition — including mutation drilling, example sentences, and pronunciation. Free to start.

Start learning Welsh

Related Welsh words

byd

world

yw

yew tree; also 'is'

awyr

air

maen

stone

maes

field

mwyn

ore

môr

sea

afon

river

blas.
Learn WelshBlogPrivacy