Dictionary.com
Thesaurus.com

ACLU

American  
Or A.C.L.U.

  1. American Civil Liberties Union.

  2. American College of Life Underwriters.

ACLU British  

abbreviation

  1. American Civil Liberties Union

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

After 9/11, she worked for the ACLU, representing the Sikh community in a series of discrimination lawsuits.

From Salon • Apr. 12, 2026

Attorneys from the ACLU, Seton Hall University and the Center for Constitutional Rights are representing the families in Massachusetts federal district court.

From Salon • Jan. 27, 2026

The letter came together over the weekend, according to Jessica Weitz, director of artist and entertainment engagement at the ACLU.

From Los Angeles Times • Sep. 22, 2025

The ACLU, along with other legal groups, is representing the men in their lawsuit.

From Slate • Jul. 12, 2025

Shortly after leaving the ACLU, I joined the board of directors of the Lawyers’ Committee for Civil Rights of the San Francisco Bay Area.

From "The New Jim Crow" by Michelle Alexander

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.