Aggressive

Ag·gres·sive

Aggressive

a.
  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.
  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.
  3. Marked by self-confident ambition, vigorous competitiveness, energy and initiative; as, an aggressive young executive.
  4. Tending to grow or spread quickly; as, an aggressive tumor. (Med., Biol.)