Where does “яз” come from?

яз (Ukrainian) comes from Old Church Slavonic ꙗзъ, from Proto-Slavic (j)azъ, from Proto-Balto-Slavic ēź-, from Proto-Indo-European éǵh₂ — I.

Ancestry of “яз”, step by step

яз traces back through 3 separate lines of ancestry.

via Old Church Slavonic ꙗзъ

StepLanguageWordMeaning
1Old Church Slavonicꙗзъ—
2Proto-Slavic(j)azъI
3Proto-Balto-Slavicēź-—
4Proto-Indo-Europeanéǵh₂I

via Proto-Turkic yāŕ

StepLanguageWordMeaning
1Proto-Turkicyāŕsummer, spring

via Proto-Slavic ězъ

StepLanguageWordMeaning
1Proto-Slavicězъweir

Words derived from “яз”

Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Balto-Slavic ēź- →Every word from Proto-Slavic (j)azъ →