Middle English word aye comes from Proto-Indo-European *h₂eyu-, Proto-Germanic *agwjō, Proto-Indo-European *h₂ekʷeh₂, Proto-Indo-European - -os, Proto-Indo-European *h₂egʰlo-, Proto-Indo-European *ag(')h-, Proto-Germanic *aiwi, and later Old Norse æ (Ever, at any time.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *h₂eyu- | Proto-Indo-European (ine-pro) | |
| *agwjō | Proto-Germanic (gem-pro) | |
| *h₂ekʷeh₂ | Proto-Indo-European (ine-pro) | |
| - -os | Proto-Indo-European (ine-pro) | |
| *h₂egʰlo- | Proto-Indo-European (ine-pro) | |
| *ag(')h- | Proto-Indo-European (ine-pro) | to frighten |
| *aiwi | Proto-Germanic (gem-pro) | |
| *aiw- | Proto-Germanic (gem-pro) | |
| *aiwa- | Proto-Germanic (gem-pro) | |
| æ | Old Norse (non) | Ever, at any time. |
| *ahwō | Proto-Germanic (gem-pro) | Stream, river. Water. |
| *h₂égʰos | Proto-Indo-European (ine-pro) | (emotional) distress. |
| *agaz | Proto-Germanic (gem-pro) | Fear; dread. |
| ege | Old English (ang) | Fear, terror. |
| ey | Old Norse (non) | Island. |
| agg | Middle English (enm) |