01 a. Tending or disposed to aggress; characterized by aggression; making assaults; unjustly attacking; as, an aggressive policy, war, person, nation.
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1.
Tending or disposed to aggress; characterized by aggression; making assaults; unjustly attacking; as, an aggressive policy, war, person, nation.“No aggressive movement was made.” — Macaulay.
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2.
Having or showing determination and energetic pursuit of one's own ends at the expense of others or mindless of others' needs or desires; as, an aggressive businessman; he was aggressive and imperious in his convictions; aggressive drivers.
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3.
Marked by self-confident ambition, vigorous competitiveness, energy and initiative; as, an aggressive young executive.
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4.
Tending to grow or spread quickly; as, an aggressive tumor.(Med., Biol.)
Syn.
enterprising, pushful, pushing, pushy