Where does “сидѣти” come from?

сидѣти (Old East Slavic) comes from Proto-Slavic sěděti, from Proto-Balto-Slavic *sēdḗˀtei, from Proto-Indo-European sḗd- — to sit.

Ancestry of “сидѣти”, step by step

StepLanguageWordMeaning
1Proto-Slavicsědětito sit, to be sitting
2Proto-Balto-Slavic*sēdḗˀteito sit
3Proto-Indo-Europeansḗd-to sit

Words derived from “сидѣти”

Every word from Proto-Indo-European sḗd- →Every word from Proto-Balto-Slavic *sēdḗˀtei →Every word from Proto-Slavic sěděti →