Where does “добивать” come from?

добивать (Russian) comes from Russian доби́ть, from Russian бить, from Proto-Slavic bìti, from Proto-Balto-Slavic bī́ˀtei, from Proto-Indo-European bʰeyh₂- — to fear, be afraid; to strike, hit; to hew, cut.

добивать (Russian): to kill off, to finish off; to crush completely,...

Definitions

to kill off, to finish off; to crush completely,...

Ancestry of “добивать”, step by step

Step	Language	Word	Meaning
1	Russian	доби́ть	to kill off, to finish off
2	Russian	бить	to beat; бить в ладо́ши ― bitʹ v ladóši ― to clap...
3	Proto-Slavic	bìti	to beat
4	Proto-Balto-Slavic	bī́ˀtei	to beat
5	Proto-Indo-European	bʰeyh₂-	to fear, be afraid; to strike, hit; to hew, cut

Words derived from “добивать”

добиваться

Every word from Proto-Indo-European bʰeyh₂- →Every word from Proto-Balto-Slavic bī́ˀtei →Every word from Proto-Slavic bìti →