1. showing an exaggerated sense of self-importance; arrogant and pretentious
2. characterized by excessive ceremony or grandeur; overly elaborate

Examples

• The pompous professor looked down on his students.
• His pompous speech was full of big words but said nothing important.
• She found his pompous attitude insufferable at dinner parties.
• The pompous ceremony lasted three hours longer than necessary.
• Don’t be so pompous about your achievements.
• The building’s pompous architecture seemed out of place in the small town.
• His pompous manner of speaking alienated his colleagues.