Where does “sei” come from?
sei (Fala) comes from Old Portuguese *sei, from Latin suus, from Proto-Italic sowos, from Proto-Indo-European sewos, from Proto-Indo-European swé — self.
Ancestry of “sei”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Portuguese | *sei | — |
| 2 | Latin | suus | his, her, its, their |
| 3 | Proto-Italic | sowos | his, her, its, their |
| 4 | Proto-Indo-European | sewos | — |
| 5 | Proto-Indo-European | swé | self |