Scared money is money a player cannot afford to lose, and the cautious, nervous way of playing that tends to come with it. A gambler using scared money worries more about losing the stake than about making good decisions, so they fold hands they should play, avoid good-value bets and misjudge risk under pressure. The old saying that scared money never wins captures the idea, especially in poker, where hesitant play is easy for opponents to read and exploit.
The practical lesson is to play only with a set bankroll of money you can afford to lose. For operators, signs of scared money, such as chasing losses or large deposits followed by erratic play, can be early indicators of harm, so they belong in responsible gambling monitoring alongside deposit limits and reality checks.