Synonyms and related words :
adventurer, betting ring, bettor, big operator, boneshaker, cardshark, cardsharp, cardsharper, compulsive gambler, crap shooter, deep-sea diver, diver, free diver, frogman, gambler, gamester, gunslinger, hazarder, jumper, lame duck, margin purchaser, operator, parachute jumper, pearl diver, petty gambler, piker, player, punter, scalper, scuba diver, sharp, sharper, sharpie, skin diver, sky diver, smart operator, snorkel diver, speculator, sport, sporting man, sportsman, stag, tinhorn, tipster, tout, venturer, wagerer