clownishness

/ˈklaʊnɪʃnəs/
noun
  1. Behavior that is silly, foolish, or exaggerated, like that of a clown.
    • She tried to hide her nervousness behind a mask of clownishness.
    • His constant clownishness in class made it hard for others to concentrate.
    • The comedian's clownishness on stage had the audience laughing nonstop.
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