blas.blas.
HomeArchiveResearch
Tables
blas.blas.

defnyddioldeb

utility

NounMasculine (gwrywaidd)C2/ˌdɛvnəðˈjɔldɛb/

"defnyddioldeb" means "utility" in Welsh (masculine noun). Pronounced /ˌdɛvnəðˈjɔldɛb/. Mutation forms: Treiglad Meddal → ddefnyddioldeb, Treiglad Trwynol → nefnyddioldeb.

Mutation forms

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

MutationForm
Base formdefnyddioldeb
Treiglad Meddalddefnyddioldeb
Treiglad Trwynolnefnyddioldeb

"defnyddioldeb" in context

Mae ei gadw ar wahân yn helpu i gynnal eglurder a defnyddioldeb y prif Fil cynllunio.

Keeping it separate helps to maintain the clarity and usability of the main planning Bill.

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 "defnyddioldeb" 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

ffurf

form

ffynhonnell

source

tu

side

ystod

range

ychydig

little

ochr

side

aelod

limb

blaen

tip

blas.
Learn WelshBlogPrivacy