In sports betting, "sharp" money refers to bets placed by professional or skilled bettors, often characterized by their informed analysis, advanced strategies, and access to inside information or analytics. These bettors tend to move lines in favor of their insights, as sportsbooks adjust odds to mitigate risk against their significant wagers. Conversely, "square" money is associated with casual or recreational bettors who may wager based on gut feelings, biases, or popular trends without a thorough understanding of the betting landscape.