Where does “kots” come from?

kots (Afrikaans) comes from Dutch kotsen, from German kotzen, from German koppen, from Middle High German koppen.

kots (Afrikaans): to vomit; vomit, barf

Definitions

Step	Language	Word	Meaning
1	Dutch	kotsen	to vomit
2	German	kotzen	to vomit; to puke
3	German	koppen	—
4	Middle High German	koppen	—

kots — Etymology, Origin & Word History | Etymology Explorer