Where does “какъ” come from?

какъ (Old East Slavic) comes from Proto-Slavic kakъ, from Proto-Balto-Slavic *kōkos.

какъ (Old East Slavic): what, which

Definitions

  1. what, which

Ancestry of “какъ”, step by step

StepLanguageWordMeaning
1Proto-Slavickakъof what/which kind
2Proto-Balto-Slavic*kōkos—

Words derived from “какъ”

Every word from Proto-Balto-Slavic *kōkos →Every word from Proto-Slavic kakъ →