Synonyms and related words :
adventurer, armchair authority, betting ring, bettor, big operator, boneshaker, cardshark, cardsharp, cardsharper, casuist, compulsive gambler, cosmologist, crap shooter, doctrinaire, doctrinarian, gambler, gamester, gunslinger, hazarder, hypothesist, hypothesizer, lame duck, margin purchaser, metaphysician, operator, petty gambler, philosophaster, philosophe, philosopher, philosophizer, piker, player, plunger, punter, scalper, sharp, sharper, sharpie, smart operator, sophist, sport, sporting man, sportsman, stag, theoretic, theoretician, theorist, theorizer, thinker, tinhorn, tipster, tout, venturer, wagerer