Definition of aggressor in English:


Line breaks: ag¦gres|sor
Pronunciation: /əˈgrɛsə


  • A person or country that attacks another first.
    More example sentences
    • So I'd attack my aggressors whether they were stronger than me or not.
    • If they continue repulsing air attacks the aggressor might reject the idea of developing invasion.
    • The target is attacked circuitously and the aggressor can therefore remain unidentified.
    attacker, assaulter, assailant, invader; instigator, provoker, initiator, warmonger, offender


mid 17th century: from late Latin, from aggredi 'to attack' (see aggression).

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