faulty
"diffygiol" means "faulty" in Welsh (adjective). Mutation forms: Treiglad Meddal → ddiffygiol, Treiglad Trwynol → niffygiol.
In Welsh, the first letter of "diffygiol" changes depending on the grammatical context. These are the mutated forms:
| Mutation | Form |
|---|---|
| Base form | diffygiol |
| Treiglad Meddal | ddiffygiol |
| Treiglad Trwynol | niffygiol |
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