mid-15c., from Middle French ablatif, from Latin (casus) ablativus "(case) of removal," expressing direction from a place or time, coined by Julius Caesar from ablatus "taken away," past participle of auferre "carrying away," from ab- "away" (see ab-) + irregular verb ferre (past participle latum; see oblate) "to carry, to bear" (see infer). The Latin case of adverbial relation, typically expressing the notion "away from," or the source or place of an action.