to stand together
"cydsefyll" means "to stand together" in Welsh (verb). Mutation forms: Treiglad Meddal → gydsefyll, Treiglad Trwynol → nghydsefyll, Treiglad Llaes → chydsefyll.
In Welsh, the first letter of "cydsefyll" changes depending on the grammatical context. These are the mutated forms:
| Mutation | Form |
|---|---|
| Base form | cydsefyll |
| Treiglad Meddal | gydsefyll |
| Treiglad Trwynol | nghydsefyll |
| Treiglad Llaes | chydsefyll |
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