1. (noun) improper or wicked or immoral behavior

• misbehavior
• misbehaviour

1. (noun) improper or wicked or immoral behavior

• abnormality
• irregularity
• delinquency
• juvenile delinquency
• devilment
• devilry
• deviltry
• mischief
• mischief-making
• mischievousness
• rascality
• roguery
• roguishness
• shenanigan
• familiarity
• impropriety
• indecorum
• liberty
• impropriety
• indecency
• indiscretion
• peccadillo
• infantilism
• ruffianism

1. (noun) improper or wicked or immoral behavior

• actus reus
• misconduct
• wrongdoing
• wrongful conduct

1. (noun) improper or wicked or immoral behavior

• misbehave
• misconduct
• misdemean