Where does “быстрыи” come from?
быстрыи (Old East Slavic) comes from Proto-Slavic bystrъ, from Proto-Indo-European bʰūsro-.
Ancestry of “быстрыи”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Slavic | bystrъ | quick; penetrating, transparent |
| 2 | Proto-Indo-European | bʰūsro- | — |