Where does “ква́с” come from?
ква́с (Russian) comes from Old East Slavic квасъ, from Proto-Slavic kvasъ, from Proto-Indo-European kwh₂et- — to ferment, become sour; to boil, foam.
ква́с (Russian): kvass
Ancestry of “ква́с”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old East Slavic | квасъ | — |
| 2 | Proto-Slavic | kvasъ | leaven, fermented drink |
| 3 | Proto-Indo-European | kwh₂et- | to ferment, become sour; to boil, foam |
Words derived from “ква́с”