Middle English word luft comes from Proto-Indo-European *lewbʰ-, Proto-Indo-European *(s)lup, and later Proto-Germanic *lubjaną (To be loving, desiring, hoping.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *lewbʰ- | Proto-Indo-European (ine-pro) | to peel, break off, damage, love |
| *(s)lup | Proto-Indo-European (ine-pro) | |
| *luftą | Proto-Germanic (gem-pro) | |
| *lubjaną | Proto-Germanic (gem-pro) | To be loving, desiring, hoping. |
| *luft- | Proto-Germanic (gem-pro) | |
| left | Old English (ang) | |
| luft | Middle English (enm) | Air. Atmosphere. Heavens, sky, firmament. |