FromProto-Celtic*merkā(“daughter”) (compareWelshmerch,Cornishmergh).
| unmutated | soft | aspirate | hard | |
|---|---|---|---|---|
| singular | merc'h | verc'h | unchanged | unchanged |
| plural | merc'hed | verc'hed | unchanged | unchanged |
Note: Certain mutated forms of some words can never occur in standard Breton.
All possible mutated forms are displayed for convenience.