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rhywun

someone

NounMasculine (gwrywaidd)A1/ˈr̥ɪu̯ɨ̞n/

“rhywun” means “someone” in Welsh (masculine noun). Pronounced /ˈr̥ɪu̯ɨ̞n/. Mutation forms: Treiglad Meddal → rywun.

Mutation forms

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

MutationForm
Base formrhywun
Treiglad Meddalrywun

“rhywun” in context

Mae rhywun yn canu.

Somebody's singing.

A1

Dim ond yn ddiweddar, mi welsom ni achos llys lle bu rhywun yn euog am fygwth arweinydd cyngor a chynghorydd yn fy rhanbarth i.

Only recently, there was a court case where someone was convicted of threatening a council leader and a councillor in my region.

B2

A phan ŷch chi'n edrych ar y rheini, wrth gwrs, mae rhywun yn sylweddoli pa mor allweddol yw y sector amaethyddol i'r holl elfennau hynny.

And when you look at those, of course, you realise just how crucial the agricultural sector is to all of those elements.

B2

Nid adeiladu a datblygu tai ar lefel dorfol yn unig sy'n arwain at golli natur, fel y dadleuodd rhywun—oherwydd bod llawer o Gymru'n wledig, mae bron i 90 y cant o'r tir yng Nghymru'n cael ei reoli ar gyfer amaethyddiaeth.

Loss of nature isn't just down to mass house building and development, as I've been told in defence—because much of Wales is rural, almost 90 per cent of land in Wales is managed for agriculture.

C1

Roedd hwn yn rhywun a oedd yn bwysig ac a fydd yn dal i fod yn bwysig yn y lle hwn a thu hwnt.

This was someone who mattered and will still matter in this place and beyond.

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

cefnder

first cousin

ffordd

way

nifer

number

hyd

length

ardal

area

rhywbeth

something

hanner

half

peth

act

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