Where does “tschö” come from?

tschö (German) comes from French adieu, from Old French a Dieu vos comant.

tschö (German): Alternative form of tschüss

Definitions

Step	Language	Word	Meaning
1	French	adieu	farewell, adieu; goodbye, see you soon; hello
2	Old French	a Dieu vos comant	—

tschö — Etymology, Origin & Word History | Etymology Explorer