Definitions
1.nounSomething done, a deed."an act of goodwill"
2.nounActuality.
3.nounSomething done once and for all, as distinguished from a work.
4.nounA product of a legislative body, a statute.
5.nounThe process of doing something."He was caught in the act of stealing."
6.nounA formal or official record of something done.
7.nounA division of a theatrical performance."The pivotal moment in the play was in the first scene of the second act."
8.nounA performer or performers in a show."Which act did you prefer? The soloist or the band?"
9.nounAny organized activity.
10.nounA display of behaviour.
11.nounA thesis maintained in public, in some English universities, by a candidate for a degree, or to show the proficiency of a student.
12.nounA display of behaviour meant to deceive."to put on an act"
13.verbTo do something."If you don't act soon, you will be in trouble."
14.verbTo do (something); to perform.
15.verbTo perform a theatrical role."I started acting at the age of eleven in my local theatre."
16.verbOf a play: to be acted out (well or badly).
17.verbTo behave in a certain manner for an indefinite length of time."A dog which acts aggressively is likely to bite."
18.verbTo convey an appearance of being."He acted unconcerned so the others wouldn't worry."
19.verbTo do something that causes a change binding on the doer."act on behalf of John"
20.verb(construed with on or upon) To have an effect (on)."Gravitational force acts on heavy bodies."
21.verbTo play (a role)."He's been acting Shakespearean leads since he was twelve."
22.verbTo feign."He acted the angry parent, but was secretly amused."
23.verb(construed with on or upon, of a group) To map via a homomorphism to a group of automorphisms (of)."This group acts on the circle, so it can't be left-orderable!"
24.verbTo move to action; to actuate; to animate.