4 Answers

ag·gres·sive (-grsv)
adj.
1. Characterized by aggression: aggressive behavior.
2. Inclined to behave in an actively hostile fashion: an aggressive regime.
3. Assertive, bold, and energetic: an aggressive sales campaign.
4. Of or relating to an investment or approach to investing that seeks above-average returns by taking above-average risks.
5. Fast growing; tending to spread quickly and invade: an aggressive tumor.
6. Characterized by or inclined toward vigorous or intensive medical treatment: an aggressive approach to treating the infection.
7. Intense or harsh, as in color.
ag·gressive·ly adv.
ag·gressive·ness n.
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

overreacting to situation or person; an angry outburst, often uncalled for, a threatening action and or manner of behaviour

My answer is someone who is self-absorbed and narcisistic.  Who intimidates or bullies and treats others poorly and abusively to get what he or she wants.

really active