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1.
ACT
(1) (also ACT Assessment) A standardized test, administered mostly in the midwestern United States by the ACT organization. ACT stood for American College Testing until 1996 when, in a similar manner to the SAT, it shortened its name to ACT to "better reflect the broad range of services" they offer to high school students.

(2) An abbreviation for Australian Capital Territory, which contains Canberra, Australia's capital (NOT Sydney).
(1) I have taken the ACT 3 times.
(2) CANBERRA, ACT - In a landmark vote, Australia's Parliament voted to allow compressed soybean oil to be sold on the open market provided its packaging...
by Thor Rudebeck August 23, 2004
 
2.
ACT
An SAT-style test that's so baller easy that someone like me who says "baller" can manage to get a 31.
Bob: I studied for the SAT since October and I got a 1670.
Danny: I got a 31 on the ACT and I studied in while driving on the freeway to school that morning.
by releasethefrogs May 17, 2007
 
3.
ACT
An acronym standing for Action Conquers Terror. It is unclear whether this was originally a military acronym, where personnel are trained to overcome fear by action until this becomes automatic. It does, however, highlight that people are capable of far more than they realise, and that fears can be beaten when they are confronted. Action show fears and self-doubt as merely a question of attitude; forward-looking action overcomes habit and inertia to produce something new and is the simplest way to start the process of change.
Don't just sit there worrying about it, do something! ACT!
by Croatalin December 10, 2013
 
4.
act
1. a display of pretend feeling

2. a dramatic mimicking
He just tried to fool us with his apparent fear, but we knew it was an act.
by The Return of Light Joker July 11, 2009
 
5.
ACT
the worst test ever. suppose to kill you and make sure you wont pass in life. a test in school to see if you can remember stuff you wont ever use in later in life EVER.
Hey did u pass the ACT?
No it made sure it ruined my future plans in life.
by grizzzzzy March 01, 2011
 
6.
act
ACT= Asshole Coming Through
A guy who is not worth your time, but thinks he's the shit. A guy you just can't be bothered with, so you let him go on through.
"Gurl, look who came in, this act is doing the most. I wouldn't touch him with a 10ft pole."
by millykidd August 11, 2014
 
7.
a state in australia, australian communist territory. a palce of the ruggged rough cunts, usially just released out of jail.
"dont fucking do that shit or the pigs will send you to A.C.T"
by Platzie September 23, 2007