aggressor

noun

ag·​gres·​sor ə-ˈgre-sər How to pronounce aggressor (audio)
: one that commits or practices aggression

Examples of aggressor in a Sentence

Each country accused the other of being the aggressor. a group of smaller states had formed an alliance to deter potential aggressors
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Edmonton tied the game 6:33 into the frame on a Mattias Ekholm shot from the left circle and became the aggressors the rest of the way. Jordan McPherson, Miami Herald, 5 June 2025 Helmets off to the Ukrainians for giving the Russian aggressors a humiliating black eye and the loss of $7 billion in military hardware using 117 relatively cheap drones. New York Daily News Editorial Board, New York Daily News, 3 June 2025 For the past century, arms control agreements have been used to constrain threats posed by potential aggressor nations. Eric S. Edelman, Foreign Affairs, 3 June 2025 The announcement came after a Strategic Defense Review by an external board found several areas in the U.K. that need to improve in order to effectively deter aggressors like Russia, as well as North Korea, Iran and China. Caitlin McFall, FOXNews.com, 3 June 2025 See All Example Sentences for aggressor

Word History

Etymology

borrowed from Latin, "attacker, assailant," from aggredī, adgredī "to approach, attack" + -tor, agent suffix — more at aggress

First Known Use

1585, in the meaning defined above

Time Traveler
The first known use of aggressor was in 1585

Browse Nearby Words

Cite this Entry

“Aggressor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aggressor. Accessed 9 Jun. 2025.

Kids Definition

aggressor

noun
ag·​gres·​sor ə-ˈgres-ər How to pronounce aggressor (audio)
: a person or country that attacks without reasonable cause

Medical Definition

aggressor

noun
ag·​gres·​sor ə-ˈgres-ər How to pronounce aggressor (audio)
: one who exhibits aggression

More from Merriam-Webster on aggressor

Last Updated: - Updated example sentences
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