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cas

hateful

AdjectiveC2/kaːs/

"cas" means "hateful" in Welsh (adjective). Pronounced /kaːs/. Mutation forms: Treiglad Meddal → gas, Treiglad Trwynol → nghas, Treiglad Llaes → chas.

Mutation forms

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

MutationForm
Base formcas
Treiglad Meddalgas
Treiglad Trwynolnghas
Treiglad Llaeschas

"cas" in context

Mae Tom yn casáu pawb.

Tom hates everybody.

B2

Dw i'n casáu'r byd oherwydd bod y byd yn fy nghasáu innau.

I hate the world because the world hates me.

B1

Mae o'n casáu Nancy.

He hates Nancy.

A2

Dw i'n casáu'r bwyd yn y ffreutur.

I hate the food in the refectory.

A2

Mae rwber yn eich cas pensiliau.

There is an eraser in your pencil case.

B1

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

hapus

happy

pryderus

anxious

chwith

sad

trwm

sad

hyfryd

lovely

addas

suitable

tawel

calm

ffyrnig

fierce

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