To act in a polite or proper way.
To conduct (oneself) well, or in a given way.
To act, conduct oneself in a specific manner; used with an adverbial of manner.
To behave in an adulterous manner.
To be undesirable or unhelpful.
To come to believe an untruth.
To become lost or mislaid.
Used other than figuratively or idiomatically: see go, astray.
To develop bad habits; to behave improperly or illegally.