Middle English word ak comes from Proto-Indo-European *h₂eyǵ- (Goat.), Proto-Indo-European *h₁e-, Proto-Indo-European *h₁o-ǵe, Proto-Indo-European *ǵe
| Dictionary entry | Language | Definition |
|---|---|---|
| *h₂eyǵ- | Proto-Indo-European (ine-pro) | Goat. |
| *h₁e- | Proto-Indo-European (ine-pro) | |
| *h₁o-ǵe | Proto-Indo-European (ine-pro) | |
| *ǵe | Proto-Indo-European (ine-pro) | |
| *aiks | Proto-Germanic (gem-pro) | Oak (wood). Oak tree. |
| *ak | Proto-Germanic (gem-pro) | But, however. |
| ac | Old English (ang) | (masculine) The runic character ᚪ (/a/). (poetic) an oaken ship. Oak (wood or tree) But. |
| ak | Middle English (enm) |