Pompous \Pomp"ous\, a. [F. pompeux, L. pomposus. See {Pomp}.] 1. Displaying pomp; stately; showy with grandeur; magnificent; as, a pompous procession. 2. Ostentatious; pretentious; boastful; vainlorious; as, pompous manners; a pompous style. ``Pompous in high presumption.'' --Chaucer. he pompous vanity of the old schoolmistress. --Thackeray. -- {Pom"ous*ly}, adv. -- {Pomp"ous*ness}, n.