Shark

Noun A sharper; a cheat; a greedy, dishonest fellow who eagerly preys upon others; a rapacious swindler, a person who is ruthless and greedy and dishonest, a person who is unusually skilled in certain ways, verb_ hunt shark, play the shark; act with trickery, transitive verb_ obsolete To pick or gather indiscriminately or covertly, intransitive verb_ To play the petty thief; to practice fraud or trickery; to swindle, To live by shifts and stratagems, To take advantage of others for personal gain, especially by fraud and trickery