Where does “естъ” come from?

естъ (Old Church Slavonic) comes from Old Church Slavonic бꙑти, from Proto-Slavic *byti, from Proto-Balto-Slavic bū́ˀtei, from Proto-Indo-European bʰuH- — to become, grow, appear.

естъ (Old Church Slavonic): Alternative form of ѥстъ

Definitions

  1. Alternative form of ѥстъ

Ancestry of “естъ”, step by step

StepLanguageWordMeaning
1Old Church Slavonicбꙑтиto be
2Proto-Slavic*byti—
3Proto-Balto-Slavicbū́ˀteito be
4Proto-Indo-EuropeanbʰuH-to become, grow, appear

Words derived from “естъ”

Every word from Proto-Indo-European bʰuH- →Every word from Proto-Balto-Slavic bū́ˀtei →Every word from Proto-Slavic *byti →