greedy

貪欲(どんよく)	Can be used about people or greedy institutions- you greedy Americans, greedy-ass Wall Street.

欲張り(くばり)	Usually used about persons rather than institutions – not usually used about business. Someone who thinks they are entitled to everything. Someone who asks for too much money.

意地汚い(いじきたない)	Usually used about kids who take toys from other kids.