Where does “kos” come from?

kos (Albanian) comes from Proto-Slavic kvasъ, from Proto-Indo-European kwh₂et- — to ferment, become sour; to boil, foam.

kos (Albanian): yogurt

Definitions

  1. yogurt

Ancestry of “kos”, step by step

StepLanguageWordMeaning
1Proto-Slavickvasъleaven, fermented drink
2Proto-Indo-Europeankwh₂et-to ferment, become sour; to boil, foam
Every word from Proto-Indo-European kwh₂et- →Every word from Proto-Slavic kvasъ →
kos — Etymology, Origin & Word History | Etymology Explorer