French word impasse comes from French in- (In-; un- (indicates negation).), French passe

Detailed word origin of impasse

Dictionary entry	Language	Definition
in-	French (fra)	In-; un- (indicates negation).
passe	French (fra)	(sports) pass. Pass (document allowing entry). Pass (passageway). Pass (the act of passing).
impasse	French (fra)	Dead-end; cul-de-sac (street). Stalemate, impasse (situation in which no progress can be made; not used in the chess sense of stalemate).

Words with the same origin as impasse