French word achat comes from Latin capto, Latin ad ((direction) toward, to, on, up to, for.), Latin ad- (To.)

Detailed word origin of achat

Dictionary entry	Language	Definition
capto	Latin (lat)	(figuratively) I seek, aim at. I strive to seize, catch or grasp at.
ad	Latin (lat)	(direction) toward, to, on, up to, for.
ad-	Latin (lat)	To.
*accapto	Latin (lat)	(Alpine) I buy, purchase. (Iberian) I respect.
*accatto	Latin (lat)
*accaptāre	Vulgar Latin (la-vul)
achater	Old French (fro)	To buy; to purchase.
achat	French (fra)	Buy, purchase.

Words with the same origin as achat