Acting like a clown or buffoon
English: buffoonery, clowning, japery, frivolity, harlequinade, prank
frivolityEnglish
frivolity, bagatelle, buffoonery, clowning, fluff
Noun
Something of little value or significance
English: bagatelle, fluff, frippery, frivolity
The trait of being frivolous, not serious or sensible
English: frivolity, frivolousness