blas.blas.
HomeArchiveResearch
Tables
blas.blas.

cosi

to itch

VerbC2/ˈkɔsi/

"cosi" means "to itch" in Welsh (verb). Pronounced /ˈkɔsi/. Mutation forms: Treiglad Meddal → gosi, Treiglad Trwynol → nghosi, Treiglad Llaes → chosi.

Mutation forms

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

MutationForm
Base formcosi
Treiglad Meddalgosi
Treiglad Trwynolnghosi
Treiglad Llaeschosi

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 "cosi" 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

trin

to treat, handle

wynebu

to face

ysgwyd

to wag

penlinio

to kneel

chwysu

to sweat

bacio

to back

deddfu

to legislate

ailosod

to refashion

blas.
Learn WelshBlogPrivacy