Inflected forms: pl. an·tiq·ui·ties 1. Ancient times, especially the times preceding the Middle Ages. 2. The people, especially the writers and artisans, of ancient times: inventions unknown to antiquity.3. The quality of being old or ancient; considerable age: a carving of great antiquity.4. Something, such as an object or a relic, belonging to or dating from ancient times. Often used in the plural.