Synonyms for misbehave

do wrong, do evil, sin, fail, trip, blunder, work iniquity, offend, trespass, act up, carry on, behave badly, misdo, err, lapse, be delinquent, be at fault, be culpable, be blameworthy, be guilty, be censurable, be reprehensible, be bad, misdemean oneself, forget oneself, misconduct oneself, be immoral, be dissolute, be disreputable, be indecorous, carry on, be naughty, go astray, take a wrong course, deviate from the path of virtue, sow one's wild oats*, cut up*, screw up*; see also transgress.

Antonyms behave*, be good, do well.