Middle English word um comes from Proto-Indo-European *ǵʰeh₁-, Proto-Indo-European *h₂ént-
| Dictionary entry | Language | Definition |
|---|---|---|
| *ǵʰeh₁- | Proto-Indo-European (ine-pro) | |
| *h₂ént- | Proto-Indo-European (ine-pro) | |
| *h₂ent- | Proto-Indo-European (ine-pro) | |
| *h₂n̥tbʰi | Proto-Indo-European (ine-pro) | |
| *h₂n̥t-bʰi | Proto-Indo-European (ine-pro) | |
| *h₂m̥bʰi | Proto-Indo-European (ine-pro) | Around, on either side of, about. Facing, against. In exchange for. |
| *furþa | Proto-Germanic (gem-pro) | |
| umb | Old Norse (non) | |
| um | Middle English (enm) |