from
The Collaborative International Dictionary of English v.0.48
Aggressive \Ag*gres"sive\, a. [Cf. F. agressif.]
1. Tending or disposed to aggress; having or showing
determination and energetic pursuit of one's own ends at
the expense of others or mindless of others' needs or
desires; characterized by aggression; making assaults;
unjustly attacking; as, an aggressive policy, war, person,
nation; an aggressive businessman; an aggressive
basketball player; he was aggressive and imperious in his
convictions; aggressive drivers. Opposite of
{unaggressive}.
[1913 Webster + WordNet 1.5]
No aggressive movement was made. --Macaulay.
[1913 Webster]
2. Marked by self-confident ambition, vigorous
competitiveness, energy and initiative; as, an aggressive
young executive.
Syn: enterprising, pushful, pushing, pushy
[WordNet 1.5]
3. (Med., Biol.) Tending to grow or spread quickly; as, an