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.
Durnan's lawyers denied all the allegations, claimed self-defense and accused Balfe of being the aggressor. Michael Ruiz, FOXNews.com, 15 Aug. 2025 It’s also formulated with a concoction of beneficial skincare ingredients such as ceramides, squalane, hyaluronic acid, and goji berries to boost hydration, even skin tone, and defend against environmental aggressors that wreak havoc on the complexion. Jessie Quinn, StyleCaster, 8 Aug. 2025 Because the movie's central dynamic—a powerful, U.S.-backed aggressor invading a poor, largely defenseless neighbor—is all too familiar. Faisal Kutty, MSNBC Newsweek, 23 July 2025 With the Trump administration taking race and gender issues off the board with executive orders — Thomas Jefferson’s university abandoned DEI and its health network briefly paused gender care for minors — Democrats can’t be easily cast as the culture-war aggressors. David Weigel, semafor.com, 8 July 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 28 Aug. 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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