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English definition of “aggressive”

aggressive

adjective uk   /əˈɡres.ɪv/ us  

aggressive adjective (ANGRY)

B2 behaving in an angry and violent way towards another person: Men tend to be more aggressive than women. If I criticize him, he gets aggressive and starts shouting.

aggressive adjective (DETERMINED)

C1 determined to win or succeed and using forceful action to win or to achieve success: an aggressive election campaign aggressive marketing tactics Both players won their first-round matches in aggressive style.

aggressive adjective (DISEASE)

specialized medical describes a disease or growth that spreads quickly and has little chance of being cured: The more aggressive the cancer, the further and faster it spreads.

aggressive adjective (TREATMENT)

specialized medical describes a very strong treatment for a serious condition: Brain cancer requires aggressive treatment such as surgery.
aggressively
adverb uk   /-li/ us  
B2 Small children often behave aggressively. The company is aggressively pursuing new business opportunities. They played more aggressively in the second half.
(Definition of aggressive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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