Associated by Matasović with Middle Welsh afanc (“dwarf; beaver”), from Proto-Celtic *abankos (“beaver”), a derivative of *abū (“river”). However, the sense ‘beaver’ is unattested in Goidelic, and Proto-Celtic *nk should give Goidelic /ɡ/, not /k/.
- Irish: abhac
|Middle Irish mutation|
|Note: Some of these forms may be hypothetical. Not every|
possible mutated form of every word actually occurs.
- “abacc” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.