From Proto-Celtic *makʷos (compare Old Irish macc, Welsh mab).
mapos m
| Number | Singular | Plural |
|---|---|---|
| Nominative | mapos | mapoi > mapī |
| Vocative | mape | mapūs |
| Accusative | mapon | mapūs |
| Genitive | mapī | mapon |
| Dative | mapūi > mapū | mapobo |
| Instrumental | mapu | mapobi |
| Locative | mape |