Idioms for act

Origin of act

First recorded in 1350–1400; Middle English act(e) (from Middle French), from Latin ācta, plural of āctum “something done,” noun use of past participle of agere “to do” (āg- past participle stem + -tum neuter past participle suffix); and directly from Latin āctus “a doing” (āg- + -tus suffix of verbal action)


synonym study for act

1. See action.

Definition for act (2 of 3)


Trademark. a standardized college admissions test developed by ACT, Inc., measuring English, mathematics, reading, and science skills: originally an abbreviation of American College Testing/American College Test.Compare SAT.
Association of Classroom Teachers.
Australian Capital Territory.

Definition for act (3 of 3) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for act

British Dictionary definitions for act (1 of 3)

/ (ækt) /



See also act on, act out, act up

Derived forms of act

actable, adjectiveactability, noun

Word Origin for act

C14: from Latin actus a doing, performance, and actum a thing done, from the past participle of agere to do

British Dictionary definitions for act (2 of 3)


abbreviation for

Australian Capital Territory
(formerly in Britain) advance corporation tax

British Dictionary definitions for act (3 of 3)

/ (ækt) /

n acronym for

(in New Zealand) Association of Consumers and Taxpayers: a small political party of the right
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with act


In addition to the idioms beginning with act

  • act of faith
  • act of God
  • act on
  • act one's age
  • act out
  • act up
  • act upon

also see:

  • catch in the act
  • clean up (one's act)
  • do a disappearing act
  • get in the act
  • get one's act together
  • hard (tough) act to follow
  • high-wire act
  • in the act of
  • put on an act
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.