shark:
(plural: ‘sharks‘; for the right pronunciation of this word, please click here)
an immoral, cruel and dishonest person who cheats the innocent people to get personal benefit;
(usually in combination with a related word) a person who is extremely good at something; an expert,
(a cartoon showing a loan shark (L) cheating a client)
Benson was a known shark; you listen to his tales and you’re a loser of a hundred or even a thousand dollars.
The financial market is full of sharks — money shark, loan sharks, stock market sharks, and so on; you take a simple wrong decision in investing your money and you are eaten by those sharks who seem to be ever hungry and your hard-earned money is gone without trace!
Now there are several people who use their skills for the entertainment of others and make a good living out of it; for example, a blind card sharp, an expert card player, makes his living by entertaining his viewers but not by cheating other players at a card game.
