Where does “ci” come from?

ci (Latgalian) comes from Belarusian ці, from Proto-Slavic či, from Proto-Indo-European *kʷís.

ci (Latgalian): Used to form polar questions

Definitions

  1. Used to form polar questions

Ancestry of “ci”, step by step

StepLanguageWordMeaning
1Belarusianціoptional interrogative particle: introduces a yes-no question
2Proto-Slavicčiif, whether; or
3Proto-Indo-European*kʷís—
Every word from Proto-Indo-European *kʷís →Every word from Proto-Slavic či →Every word from Belarusian ці →