ALL meanings of act upon
act up·on
A a - noun act upon anything done, being done, or to be done; deed; performance: a heroic act. 1
- noun act upon the process of doing: caught in the act. 1
- noun act upon a formal decision, law, or the like, by a legislature, ruler, court, or other authority; decree or edict; statute; judgment, resolve, or award: an act of Congress. 1
- noun act upon an instrument or document stating something done or transacted. 1
- noun act upon one of the main divisions of a play or opera: the second act of Hamlet. 1
- noun act upon a short performance by one or more entertainers, usually part of a variety show or radio or television program. 1
- noun act upon the personnel of such a group: The act broke up after 30 years. 1
- noun act upon false show; pretense; feint: The politician's pious remarks were all an act. 1
- noun act upon Philosophy. activity in process; operation. the principle or power of operation. form as determining essence. a state of realization, as opposed to potentiality. 1
- verb without object act upon to do something; exert energy or force; be employed or operative: He acted promptly in the emergency. 1
- verb without object act upon to reach, make, or issue a decision on some matter: I am required to act before noon tomorrow. 1
- verb without object act upon to operate or function in a particular way; perform specific duties or functions: to act as manager. 1
- verb without object act upon to produce an effect; perform a function: The medicine failed to act. 1
- verb without object act upon to behave or conduct oneself in a particular fashion: to act well under all conditions. 1
- verb without object act upon to pretend; feign: Act interested even if you're bored. 1
- transitivephrasal verb act upon do sth in response 1
- verb without object act upon to perform as an actor: He acted in three plays by Molière. 1
- transitivephrasal verb act upon have an effect on 1
- verb without object act upon to be capable of being performed: His plays don't act well. 1
- verb without object act upon to serve or substitute (usually followed by for): In my absence the assistant manager will act for me. 1
- verb with object act upon to represent (a fictitious or historical character) with one's person: to act Macbeth. 1
- verb with object act upon to feign; counterfeit: to act outraged virtue. 1
- verb with object act upon to behave as: He acted the fool. 1
- verb with object act upon Obsolete. to actuate. 1
- idioms act upon act funny, to display eccentric or suspicious behavior. 1
- idioms act upon act one's age, to behave in a manner appropriate to one's maturity: We children enjoyed our uncle because he didn't always act his age. 1
- idioms act upon clean up one's act, Informal. to begin adhering to more acceptable practices, rules of behavior, etc.: The factory must clean up its act and treat its employees better. 1
- verb act upon To act on the basis of information received or deduced. 0