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Synonyms

aggressor

American  
[uh-gres-er] / əˈgrɛs ər /

noun

  1. a person, group, or nation that attacks first or initiates hostilities; an assailant or invader.


Etymology

Origin of aggressor

1670–80; < Late Latin, Latin aggred- (stem of aggredī to attack; see aggress) + -tor -tor

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.

He warned this month that "any external aggressor will encounter an unbreakable resistance."

From Barron's • Mar. 29, 2026

Will then lurches into a tut-tutting recapitulation of the French army chief of staff’s public statement that his nation’s people must accept the risk of losing their children to protect France from an unnamed aggressor.

From Salon • Dec. 20, 2025

If the antidote is keeping the explosive Head at the top of the order and bringing an aggressor like Josh Inglis into the team, it creates the possibility of runs and wickets happening quickly.

From BBC • Nov. 26, 2025

What is disputed is which power Adolf Hitler, the war’s main aggressor, was most concerned with and which power made the biggest contribution to his defeat.

From The Wall Street Journal • Oct. 24, 2025

Once again, the players seemed to switch personalities as they played, with Petrosian as the aggressor.

From "Endgame" by Frank Brady