1.VerbTo conduct (oneself) well, or in a given way; to conform.
"You need to behave yourself, young lady."
2.VerbTo act, conduct oneself in a specific manner; used with an adverbial of manner.
"He behaves like a child whenever she's around.; How did the students behave while I was gone?; My laptop has been behaving erratically ever since you borrowed it."
3.VerbTo conduct, manage, regulate (something).
4.VerbTo act in a polite or proper way.
"His mother threatened to spank him if he didn't behave."