aggressor

noun

ag·​gres·​sor ə-ˈgre-sər How to pronounce aggressor (audio)
Synonyms of aggressornext
: 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.
Officers at the scene viewed the Costco parking lot video recording, and several witnesses reported that Ferraro was the aggressor. Jeff McDonald, San Diego Union-Tribune, 30 May 2026 Advertisement Regardless of the facts, each side views itself as the aggrieved party and the other as the aggressor, sees the stakes as too high to step back unilaterally, and treats restraint as surrender. Bruce Sibley, Time, 29 May 2026 After their athletes shared the podium with competitors from the 'aggressor and satellite state,’ the Ukrainian Gymnastics Federation launched into protest. Caroline Price, Forbes.com, 29 May 2026 Even fewer have different styles, with both vying to be the aggressor, producing multiple high-scoring classics. Jordan Campbell, New York Times, 25 May 2026 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 5 Jun. 2026.

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

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