To misbehave is to behave badly.(verb)
When a child throws a temper tantrum in the store even though he knows he is not supposed to do that, this is an example of when the child misbehaves.
See misbehave in Webster's New World College Dictionary
See misbehave in American Heritage Dictionary 4
verb mis·be·haved, mis·be·hav·ing, mis·be·haves verb, intransitive
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