French word insuffisance comes from French in- (In-; un- (indicates negation).), French suffisance

Detailed word origin of insuffisance

Dictionary entry	Language	Definition
in-	French (fra)	In-; un- (indicates negation).
suffisance	French (fra)	Self-importance, vanity. Sufficiency (quality or condition of being sufficient).
insuffisance	French (fra)	Shortfall; insufficiency.

Words with the same origin as insuffisance