<p><strong>Verb (used without object)</strong></p><ul><li>to act in a particular way; conduct or comport oneself or itself: The ship behaves well.</li><li>Synonyms: perform</li><li>to act properly: Did the child behave?</li><li>to act or react under given circumstances: This plastic behaves strangely under extreme heat or cold.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to conduct or comport (oneself) in a proper manner: Sit quietly and behave yourself.</li></ul>