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defnyddiol

useful

AdjectiveC1

"defnyddiol" means "useful" in Welsh (adjective). Mutation forms: Treiglad Meddal → ddefnyddiol, Treiglad Trwynol → nefnyddiol.

Mutation forms

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

MutationForm
Base formdefnyddiol
Treiglad Meddalddefnyddiol
Treiglad Trwynolnefnyddiol

"defnyddiol" in context

Roedd y polisi amaethyddol cyffredin, a fu'n fwgan defnyddiol am flynyddoedd, yn gwarantu isafswm incwm i ffermwyr—mae hwnnw wedi mynd.

The common agricultural policy, which was a handy bogeyman for years, gave farmers a minimum income guarantee—that’s gone.

C1

—yn cyflawni pwrpas defnyddiol i'r graddau ei fod yn canolbwyntio ein sylw ar yr hyn a ddaw yn eu lle.

—does serve a useful purpose insofar as it sharpens our attention on what will replace them.

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 →

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Related Welsh words

unig

only

uchel

high

araf

slow

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fast

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poor

budr

vile

bach

small

dim

no

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