Dictionary.com
Thesaurus.com

antiwar

American  
[an-tee-wawr, an-tahy-] / ˌæn tiˈwɔr, ˌæn taɪ- /

adjective

  1. against war or a particular war.

    the antiwar movement of the 1960s.
antiwar British  
/ ˌæntɪˈwɔː /

adjective

  1. opposed to war

    the antiwar movement
"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

Etymology

Origin of antiwar

anti- + war 1

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.

A close friend of Vance who spoke with him recently said he described feeling like he was sometimes walking on eggshells around Trump because of his antiwar views.

From The Wall Street Journal • Apr. 11, 2026

His sardonically bouncy song “Vietnam,” from his self-titled album released in 1969, was said to have been Bob Dylan’s favorite antiwar song.

From The Wall Street Journal • Nov. 24, 2025

The antiwar movement is represented by cartoon protestors waving cartoon signs.

From Salon • Nov. 1, 2025

He has marched in antiwar protests and dropped massive banners from Texas highways that say: Let Gaza live.

From Los Angeles Times • Oct. 12, 2025

On January 8, 1973, Daniel Ellsberg was given a standing ovation when he spoke at an antiwar rally in Los Angeles.

From "Most Dangerous: Daniel Ellsberg and the Secret History of the Vietnam War" by Steve Sheinkin

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.