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arbrawf

proof

NounMasculine (gwrywaidd)C1/ˈarbrau̯v/

"arbrawf" means "proof" in Welsh (masculine noun). Pronounced /ˈarbrau̯v/. Mutation forms: Treiglad Llaes → harbrawf.

Mutation forms

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

MutationForm
Base formarbrawf
Treiglad Llaesharbrawf

"arbrawf" in context

Mae rhai hyd yn oed yn awgrymu bod ein sir yn cael ei defnyddio fel arbrawf.

Some are even suggesting that our county is being used as a guinea pig.

B1

A dyna'r peth gwirioneddol hanfodol am yr arbrawf preifateiddio sydd wedi methu.

And that’s the really crucial thing about the failed experiment of privatisation.

C1

Mae angen cysondeb a strwythur ar ein pobl ifanc ni, nid arbrawf sy'n peryglu y byddan nhw'n cael eu gadael heb eu paratoi i'r dyfodol.

Our young people need consistency and structure, not an experiment that risks leaving them unprepared for the future.

B2

Y gwir amdani yw bod yr arbrawf sosialaidd hwn wedi methu.

The simple truth is that this socialist experiment has failed.

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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