Where does “бꙑстръ” come from?

бꙑстръ (Church Slavonic) comes from Proto-Slavic bystrъ, from Proto-Indo-European bʰūsro-.

Ancestry of “бꙑстръ”, step by step

StepLanguageWordMeaning
1Proto-Slavicbystrъquick; penetrating, transparent
2Proto-Indo-Europeanbʰūsro-—

Words derived from “бꙑстръ”

Every word from Proto-Indo-European bʰūsro- →Every word from Proto-Slavic bystrъ →
бꙑстръ — Etymology, Origin & Word History | Etymology Explorer