Hustler
A hustler was a type of con artist who was quite deceitful and successful in playing a game.

Mardah called Jake a hustler regarding his skills at dom-jot much to the confusion of his father. ()

While inhabiting Odo, Curzon Dax saw a Ferengi Tongo hustler in Quark's and told Jadzia he would make him out. ()

Tom Paris told Harry Kim that the pool table at Chez Sandríne in Marseilles attracted the world's greatest pool hustlers. ()

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Illegal occupations