Where does “jak” come from?

jak (Czech) comes from Old Czech jak, from Proto-Slavic jako, from Proto-Slavic jakъ, from Proto-Slavic jь, from Proto-Balto-Slavic iś, from Old Polish ić, from Proto-Slavic jьti, from Proto-Balto-Slavic eitei — to go.

jak (Czech): how; as; yak

Definitions

  1. how; as; yak

Ancestry of “jak”, step by step

jak traces back through two separate lines of ancestry.

via Old Czech jak

StepLanguageWordMeaning
1Old Czechjak—
2Proto-Slavicjakohow, in which way
3Proto-Slavicjakъof this kind; of what/which kind
4Proto-Slavicjьthis; he
5Proto-Balto-Slaviciśthis
6Old Polishićto go
7Proto-Slavicjьtito go
8Proto-Balto-Slaviceiteito go
9Proto-Indo-Europeanh₁éytito go, to be going
10Proto-Indo-Europeanh₁ey-to go

via Tibetan གཡག

StepLanguageWordMeaning
1Tibetanགཡགyak
2Proto-Sino-Tibetang-jak ~ g-jaŋsheep, yak

Words derived from “jak”

Every word from Proto-Indo-European h₁ey- →Every word from Proto-Indo-European h₁éyti →Every word from Proto-Balto-Slavic eitei →