1a. To conduct oneself in a specified way: The child behaved badly at the party.b. To conduct oneself in a proper way: I told the child to behave.2. To act, react, function, or perform in a particular way: This fabric behaves well even in hot weather.
TRANSITIVE VERB:
1. To conduct (oneself) properly: Did you behave yourself at the party?2. To conduct (oneself) in a specified way: The witness behaved herself with great calmness.
ETYMOLOGY:
Middle English behaven : be-, be- + haven, to have; see have.