noun \ə-ˈgre-sər\

: a person or country that attacks another : a person or country that starts a fight or war

Full Definition of AGGRESSOR

:  one that commits or practices aggression

Examples of AGGRESSOR

  1. Each country accused the other of being the aggressor.
  2. <these pocket-size states had formed an alliance to deter potential aggressors>

First Known Use of AGGRESSOR



noun \ə-ˈgres-ər\   (Medical Dictionary)

Medical Definition of AGGRESSOR

: one who exhibits aggression


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