To pretend to be (a different person); to assume the identity of.
To operate with the permissions of a different user account.
To behave theatrically so as to give the impression of (a quality, character trait, etc.); to feign.
To fulfill contractually agreed-to terms.
To exhibit an expected pattern of behavior; to function; to work.
To act in accordance with (a contract); to fulfill one’s terms of (a contract).
To do (something); to execute.
To do (something) in front of an audience, such as acting or music, often in order to entertain.
To behave in accordance with, and thereby in turn shape, (a social notion or role).
To behave in ways that carry meaning in social contexts.