Where does “kos” come from?

kos (Middle Dutch) comes from Old Dutch kos, from Proto-West Germanic koss, from Proto-Germanic kussaz — kiss.

Ancestry of “kos”, step by step

StepLanguageWordMeaning
1Old Dutchkos—
2Proto-West Germanickosskiss
3Proto-Germanickussazkiss

Words derived from “kos”

Every word from Proto-Germanic kussaz →Every word from Proto-West Germanic koss →Every word from Old Dutch kos →