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tywyll

dark

AdjectiveA2/ˈtəu̯.ɨ̞ɬ/

“tywyll” means “dark” in Welsh (adjective). Pronounced /ˈtəu̯.ɨ̞ɬ/. Mutation forms: Treiglad Meddal → dywyll, Treiglad Trwynol → nhywyll, Treiglad Llaes → thywyll.

Mutation forms

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

MutationForm
Base formtywyll
Treiglad Meddaldywyll
Treiglad Trwynolnhywyll
Treiglad Llaesthywyll

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

gwyn

white

unig

only

du

black

uchel

high

coch

red

glas

blue

brown

brown

melyn

yellow

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