Where does “sink-” come from?

sink- (Proto-Balto-Slavic) comes from Proto-Indo-European senk-, from Proto-Indo-European sek- — to cut, cut off, sever.

Ancestry of “sink-”, step by step

sink- traces back through two separate lines of ancestry.

via Proto-Indo-European senk-

StepLanguageWordMeaning
1Proto-Indo-Europeansenk-to burn
2Proto-Indo-Europeansek-to cut, cut off, sever

via Proto-Indo-European sn̥k-

StepLanguageWordMeaning
1Proto-Indo-Europeansn̥k-

Words derived from “sink-

Every word from Proto-Indo-European sek-Every word from Proto-Indo-European senk-