mis·​be·​hav·​ior | \ ˌmis-bi-ˈhā-vyər How to pronounce misbehavior (audio) , -bē-\
plural misbehaviors

Definition of misbehavior

1 : bad, improper, or rude behavior : ill conduct scolded the children for their misbehavior
2 US military law : any conduct by a member of the armed forces before or in the presence of the enemy that does not conform to military standards or practice for such a situation … is charged with desertion and misbehavior before the enemy, the latter of which carries a maximum penalty of life in prison.The Boston Herald

First Known Use of misbehavior

15th century , in the meaning defined at sense 1

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The first known use of misbehavior was in the 15th century

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a sum of money that is sent as a payment

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