heroism
"arwriaeth" means "heroism" in Welsh (masculine noun). Mutation forms: Treiglad Llaes → harwriaeth.
In Welsh, the first letter of "arwriaeth" changes depending on the grammatical context. These are the mutated forms:
| Mutation | Form |
|---|---|
| Base form | arwriaeth |
| Treiglad Llaes | harwriaeth |
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