act

1. (noun) Something done, a deed. 2. (noun) Actuality. 3. (noun) Something done once and for all, as distinguished from a work. 4. (noun) A product of a legislative body, a statute. 5. (noun) The process of doing something. 6. (noun) A formal or official record of something done. 7. (noun) A division of a theatrical performance. 8. (noun) A performer or performers in a show. 9. (noun) Any organized activity. 10. (noun) A display of behaviour. 11. (noun) A thesis maintained in public, in some English universities, by a candidate for a degree, or to show the proficiency of a student. 12. (noun) A display of behaviour meant to deceive. 13. (verb) To do something. 14. (verb) To do (something); to perform. 15. (verb) To perform a theatrical role. 16. (verb) Of a play: to be acted out (well or badly). 17. (verb) To behave in a certain manner for an indefinite length of time. 18. (verb) To convey an appearance of being. 19. (verb) To do something that causes a change binding on the doer. 20. (verb) (construed with on or upon) To have an effect (on). 21. (verb) To play (a role). 22. (verb) To feign. 23. (verb) (construed with on or upon, of a group) To map via a homomorphism to a group of automorphisms (of). 24. (verb) To move to action; to actuate; to animate.