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duo

to grow dark

Verbdict/ˈdɨː.ɔ/

"duo" means "to grow dark" in Welsh (verb). Pronounced /ˈdɨː.ɔ/. Mutation forms: Treiglad Meddal → dduo, Treiglad Trwynol → nuo.

Mutation forms

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

MutationForm
Base formduo
Treiglad Meddaldduo
Treiglad Trwynolnuo

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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