Where does “vo-” come from?

vo- (Old Slovak) comes from Proto-Slavic vъ(n)-, from Proto-Indo-European h₁én — in.

Ancestry of “vo-”, step by step

StepLanguageWordMeaning
1Proto-Slavicvъ(n)-—
2Proto-Indo-Europeanh₁énin

Words derived from “vo-”

Every word from Proto-Indo-European h₁én →Every word from Proto-Slavic vъ(n)- →