Where does “kust-” come from?

kust- (Proto-Germanic) comes from Proto-Indo-European ǵews- — to taste, try.

Ancestry of “kust-”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanǵews-to taste, try

Words derived from “kust-

Every word from Proto-Indo-European ǵews-
kust- — Etymology, Origin & Word History | Etymology Explorer