Where does “kēsman” come from?

kēsman (Old Prussian) comes from Proto-Balto-Slavic keʔs-, from Proto-Indo-European k(ʷ)eh₁s-.

Ancestry of “kēsman”, step by step

StepLanguageWordMeaning
1Proto-Balto-Slavickeʔs-—
2Proto-Indo-Europeank(ʷ)eh₁s-—

Words derived from “kēsman”

Every word from Proto-Indo-European k(ʷ)eh₁s- →Every word from Proto-Balto-Slavic keʔs- →