Where does “ра́вно-” come from?

ра́вно- (Russian) comes from Bulgarian ра́вен, from Proto-Slavic orvьnъ, from Proto-Slavic -ьnъ — -ish, -ic, -al, -ed; From adjectives.

Ancestry of “ра́вно-”, step by step

StepLanguageWordMeaning
1Bulgarianра́венeven, level, flat, smooth
2Proto-Slavicorvьnъstraight; even
3Proto-Slavic-ьnъ-ish, -ic, -al, -ed; From adjectives

Words derived from “ра́вно-”

Every word from Proto-Slavic -ьnъ →Every word from Proto-Slavic orvьnъ →Every word from Bulgarian ра́вен →