Where does “ambassadeur” come from?
ambassadeur (Old French) comes from Old Italian ambassatore, from Old Occitan ambaisador, from Old Occitan ambaissa, from Latin ambactia, from Proto-Germanic ambahtiją, from Proto-Germanic ambahtaz, from Gaulish ambaxtos, from Proto-Celtic ambaxtos — to drive.
ambassadeur (Old French): ambassador
Ancestry of “ambassadeur”, step by step
Words derived from “ambassadeur”