1620s, past-participle adjective from verb antiquate "make old or obsolete" (1590s), from Latin antiquatus, past participle of antiquare "restore to its ancient condition," in Late Latin "make old," from antiquus "ancient, of olden times; aged, venerable; old-fashioned" (see antique (adj.)). An older adjective in the same sense was antiquate (early 15c.), from Latin. Related: Antiquatedness.
antipope
antipyretic
antiquarian
antiquary
antiquate
antiquated
antiquation
antique
antiquity
anti-scorbutic
anti-Semite