| Language | Lexeme | Native script | Phonetic | Phonemic | Notes | |
|---|---|---|---|---|---|---|
| 155 | Middle Breton | queyn, quein | ˈkejn | |||
| 156 | Breton: Gwened | kein | kɛ̃ɲ | |||
| 157 | Breton: Treger | kein | ˈkẽɲ | ˈkẽɲ | ||
| 151 | Welsh: North | cefn | cɛvn | kevn | ||
| 150 | Middle Welsh | cefn | kevn | |||
| 149 | Old Welsh | cemn | keβn | in the meaning 'ridge' in LL: 156. | ||
| 152 | Middle Cornish | keyn | kein | |||
| 153 | Late Cornish | kein | kein |
Also in the placename Cevenna 'Cevennes', which points to Gaulish *Cebenna. From Proto-Celtic *cebn-.
S.v. Old Welsh ceng 'back' [ceing, cefn].
