Where does “ru” come from?
ru (Old French) comes from Vulgar Latin rius, from Latin rīvus, from Proto-Italic rīwos, from Proto-Indo-European h₃riH-wó-s, from Proto-Indo-European h₃reyH-, from Proto-Indo-European h₃er- — to move, to stir; to rise, to spring; to quarrel,...
Ancestry of “ru”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Vulgar Latin | rius | river |
| 2 | Latin | rīvus | — |
| 3 | Proto-Italic | rīwos | — |
| 4 | Proto-Indo-European | h₃riH-wó-s | — |
| 5 | Proto-Indo-European | h₃reyH- | to move, set in motion; to flow, stream ; to... |
| 6 | Proto-Indo-European | h₃er- | to move, to stir; to rise, to spring; to quarrel,... |