Synonyms for mischief

noun

1. Damage

   hurt, injury, trouble, harm; see damage 1.

2. Evil

   atrocity, ill, catastrophe; see evil 2, wrong 2.

3. Prankishness

   troublesomeness, harmfulness, impishness, waggishness, sportiveness, roguishness, rascality, misbehavior, misconduct, fault, transgression, wrongdoing, misdoing, playfulness, frolicsomeness, naughtiness, mischief-making, devilment, friskiness, shenanigans*, funny business*.

   Antonyms dignity*, demureness, sedateness.