When you do something wrong or bad, that's misbehavior. If your little brother hides your homework, intentionally dumps his cereal on the floor, and draws on the walls with permanent marker, you might say he's an expert in misbehavior.

Whether an activity is mere naughtiness or more significant misconduct, it all falls under the category of misbehavior. When a politician pays someone to stay quiet about his misbehavior, he's added additional misbehavior to the record. If you know that behavior means the way you act, it's easy to see what happens when you add the prefix mis-, meaning "bad".

Definitions of misbehavior

n improper or wicked or immoral behavior

misbehaviour, misdeed
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delinquency, juvenile delinquency
an antisocial misdeed in violation of the law by a minor
devilment, devilry, deviltry, mischief, mischief-making, mischievousness, rascality, roguery, roguishness, shenanigan
reckless or malicious behavior that causes discomfort or annoyance in others
violent lawless behavior
familiarity, impropriety, indecorum, liberty
an act of undue intimacy
abnormality, irregularity
behavior that breaches the rule or etiquette or custom or morality
impropriety, indecency
an indecent or improper act
indiscretion, peccadillo
a petty misdeed
infantile behavior in mature persons
blaze, hell
noisy and unrestrained mischief
monkey business
mischievous or deceitful behavior
deviance, deviation
deviate behavior
an obscene act
hooliganism, malicious mischief, vandalism
willful wanton and malicious destruction of the property of others
Type of:
actus reus, misconduct, wrongdoing, wrongful conduct
activity that transgresses moral or civil law

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