high-rolling

The compound 'high-rolling' is a vivid American English coinage from the mid-20th century, directly drawn from the imagery of casino gambling. The morpheme 'high' denotes the elevated stakes or large sums of money being wagered. 'Rolling' refers specifically to the act of throwing dice, a central activity in games like craps. Literally, it described a gambler who consistently bets large amounts. The term's logic elegantly extended from the literal gambling table to characterize any lavish, free-spending lifestyle, where financial risks and expenditures are metaphorically as high as the stakes of a prolific dice player. It encapsulates a persona of audacious wealth display and risk-taking.

Structure: high (elevated) + rolling (moving/gambling) - high: From Old English hēah, of Germanic origin; related to Dutch hoog and German hoch. Functions as an adjective/adverb in the compound, conveying a sense of great degree or amount. - rolling: From the verb roll, from Old French roller, ultimately from Latin rotulus 'a little wheel'. In this compound, it specifically evokes the action of rolling dice in gambling, extended to mean engaging in an activity, especially one involving risk or large sums of money.