unnecessary
"dieisiau" means "unnecessary" in Welsh (adjective). Pronounced /diːˈei̯ʃaɨ̯/. Mutation forms: Treiglad Meddal → ddieisiau, Treiglad Trwynol → nieisiau.
In Welsh, the first letter of "dieisiau" changes depending on the grammatical context. These are the mutated forms:
| Mutation | Form |
|---|---|
| Base form | dieisiau |
| Treiglad Meddal | ddieisiau |
| Treiglad Trwynol | nieisiau |
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