Predator

Predator

•  an animal that naturally preys on others
• a rapacious, exploitative person or group

Rapacious

• aggressively greedy or grasping

above definitions from Oxford Dictionary, p 1459, p 1536

Also from Encarta Web Dictionary 1 Dec 2010 09:02 (since withdrawn from web)

predator [ préddətər ] (plural predators) noun 

1. carnivorous animal or destructive organism: a carnivorous animal that hunts, kills, and eats other animals in order to survive, or any other organism that behaves in a similar manner

2. somebody who plunders or destroys: a person, group, company, or state that steals from others or destroys others for gain

3. ruthlessly aggressive person: an aggressive, determined, or persistent person

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Kaayen' Vaacha Mansendriyaiva Budhyaatmana va Prakrite Svabhaavaat';
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