Where does “um” come from?
um (Indo-Portuguese) comes from Portuguese um, from Old Portuguese ũu, from Latin ūnus, from Old Latin oinos, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.
um (Indo-Portuguese): a
Ancestry of “um”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Portuguese | um | one; a, an; The figure or digit "1": one |
| 2 | Old Portuguese | ũu | Masculine singular indefinite article; a; an |
| 3 | Latin | ūnus | — |
| 4 | Old Latin | oinos | one |
| 5 | Proto-Italic | oinos | cardinal number
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*duō;... |
| 6 | Proto-Indo-European | óynos | one; single |