home v Hasisi Park vacuous vac⋅u⋅ous [vak-yoo-uhs] –adjective 1. without contents; empty: the vacuous air. 2. lacking in ideas or intelligence: a vacuous mind. 3. expressing or characterized by a lack of ideas or intelligence; inane; stupid: a vacuous book. 4. purposeless; idle: a vacuous way of life. a b c d e f g h i j k l m n o p q r s t u v w x y z vacation vanishing-point vacuous vacuum view visitor violence void vomit vivid