Buffoon
Definition 1 of 2
Pro Tip 1/3
Negative nuance
Using 'buffoon' often implies disapproval and can sound disrespectful. Don't be such a buffoon; take this matter seriously.
Pro Tip 2/3
Social contexts
Usually used to describe someone in social situations where their behavior is out of place. At the wedding, he was acting like a buffoon during speeches.
Pro Tip 3/3
Not humorous
'Buffoon' suggests the person's humor is failing to amuse others. He tried to lighten the mood but came off as a buffoon.