Where does “kus” come from?

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

Ancestry of “kus”, step by step

kus traces back through two separate lines of ancestry.

via Old Dutch kos

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

via Old Dutch kus

StepLanguageWordMeaning
1Old Dutchkus—
Every word from Proto-Germanic kussaz →Every word from Proto-West Germanic koss →Every word from Old Dutch kos →