1. resembling or befitting a clown; silly and awkward
2. lacking refinement or social grace; crude or boorish

Examples

• His clownish behavior at the formal dinner embarrassed his family.
• The actor’s clownish movements made the audience laugh.
• She found his clownish attempts at humor rather annoying.
• The politician’s clownish remarks damaged his reputation.
• His clownish mannerisms were endearing to children but inappropriate for business meetings.
• The waiter’s clownish clumsiness resulted in several spilled drinks.