Where does “osvědčený” come from?

osvědčený (Czech) comes from Czech osvědčit, from Czech o-, from Proto-Slavic o(b), from Proto-Balto-Slavic ab, from Proto-Indo-European h₃ebʰi.

osvědčený (Czech): time-tested, proven

Definitions

  1. time-tested, proven

Ancestry of “osvědčený”, step by step

StepLanguageWordMeaning
1Czechosvědčitto certify; to prove good or useful
2Czecho-around, all around; A complete action, a...
3Proto-Slavico(b)around, about; concerning; against, on
4Proto-Balto-Slavicab—
5Proto-Indo-Europeanh₃ebʰi—
Every word from Proto-Indo-European h₃ebʰi →Every word from Proto-Balto-Slavic ab →Every word from Proto-Slavic o(b) →