definition
To do something.
example
If you don't act soon, you will be in trouble.
definition
To do (something); to perform.
definition
To perform a theatrical role.
example
I started acting at the age of eleven in my local theatre.
definition
Of a play: to be acted out (well or badly).
definition
To behave in a certain manner for an indefinite length of time.
example
A dog which acts aggressively is likely to bite.
definition
To convey an appearance of being.
example
He acted unconcerned so the others wouldn't worry.
definition
To do something that causes a change binding on the doer.
example
act on behalf of John
definition
(construed with on or upon) To have an effect (on).
example
Gravitational force acts on heavy bodies.
definition
To play (a role).
example
He's been acting Shakespearean leads since he was twelve.
definition
To feign.
example
He acted the angry parent, but was secretly amused.
definition
(construed with on or upon, of a group) To map via a homomorphism to a group of automorphisms (of).
example
This group acts on the circle, so it can't be left-orderable!
definition
To move to action; to actuate; to animate.