/ əˈgresɪv; NAmE / adjective
1.
angry, and behaving in a threatening way; ready to attack :
He gets aggressive when he's drunk.
a dangerous aggressive dog
2.
acting with force and determination in order to succeed :
an aggressive advertising campaign
A good salesperson has to be aggressive in today's competitive market.
► ag·gres·sive·ly adverb :
'What do you want?' he demanded aggressively.
aggressively marketed products
► ag·gres·sive·ness noun [ U ]
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WORD ORIGIN
early 19th cent.: from Latin aggress- attacked (from the verb aggredi ) + -ive ; compare with French agressif , -ive .