blas.
Dictionary
BlogAbout

defnyddio

to use

VerbA1/dɛvˈnəðjɔ/

“defnyddio” means “to use” in Welsh (verb). Pronounced /dɛvˈnəðjɔ/. Mutation forms: Treiglad Meddal → ddefnyddio, Treiglad Trwynol → nefnyddio.

Mutation forms

In Welsh, the first letter of “defnyddio” changes depending on the grammatical context. These are the mutated forms:

MutationForm
Base formdefnyddio
Treiglad Meddalddefnyddio
Treiglad Trwynolnefnyddio

“defnyddio” in context

Ga i defnyddio dy ffôn di?

Could I use your phone?

A1

Ydy Mary yn defnyddio arogldarth?

Does Mary use incense?

B1

Maen nhw'n hoffi defnyddio arogldarth.

They like using incense.

B1

Ac rwyf wedi siarad â phobl sydd wedi defnyddio'r cynllun, ac maent wedi ei ganmol i'r cymylau, a chredaf fod hynny'n wirioneddol braf ei weld.

And I have spoken to people who have used the scheme, and they’ve been glowing about that, and I think it’s really, really pleasing to see.

C1

Mae defnyddio’r amser yma ar gyfer creu cynlluniau sydd ddim yn hyfyw yn arafu’r gallu wedyn i gyflenwi cartrefi cymdeithasol newydd ac i wella cartrefi presennol.

Using this time to create plans that are not viable is going to slow down the ability to supply new social homes and to improve existing homes.

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 “defnyddio” 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

agor

to open

cynnwys

to permit

chwilio

to find

dal

to hold

ffurfio

to form

nhau

to clean

rhoi

to put

sefyll

to sit

blas.
Learn WelshBlogPrivacy