Where does “що-” come from?

що- (Ukrainian) comes from Ukrainian що, from Proto-Slavic čьto, from Proto-Balto-Slavic ki, from Proto-Indo-European kʷíd, from Proto-Indo-European kʷís, from Proto-Indo-European kʷi- — interrogative base.

що- (Ukrainian): Forms adverbs and adjectives denoting occurrence in each of a given time period

Definitions

  1. Forms adverbs and adjectives denoting occurrence in each of a given time period

Ancestry of “що-”, step by step

StepLanguageWordMeaning
1Ukrainianщоthat; that, which; what
2Proto-Slavicčьtowhat
3Proto-Balto-Slavickiwhat
4Proto-Indo-Europeankʷídneuter nominative/accusative singular of *kʷís
5Proto-Indo-Europeankʷíswho, what; who, which, that; which, what
6Proto-Indo-Europeankʷi-interrogative base

Words derived from “що-”

Every word from Proto-Indo-European kʷi- →Every word from Proto-Indo-European kʷís →Every word from Proto-Indo-European kʷíd →