card shark ( synonym found)
Definition of card shark:

°One who is skilled at card games, especially at cheating in them.
"One of Tim's great-grandparents had been a cardsharp in the wild west, and had been shot dead during a game."
Definition of card shark:

°One who is skilled at card games, especially at cheating in them.
"One of Tim's great-grandparents had been a cardsharp in the wild west, and had been shot dead during a game."
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