Where does “Avantgarde-Kunst” come from?

Avantgarde-Kunst (German) comes from German Avantgarde, from French avant-garde, from Old French avantgarde.

Avantgarde-Kunst (German): avantgarde art

Definitions

Step	Language	Word	Meaning
1	German	Avantgarde	avant-garde
2	French	avant-garde	vanguard; avant-garde, firing line
3	Old French	avantgarde	—

Avantgarde-Kunst — Etymology, Origin & Word History | Etymology Explorer