What is the opposite of being "prodigal"?

The term "prodigal" refers to a person who spends money or resources freely and recklessly; it often implies a sense of wastefulness. Therefore, the opposite of being prodigal is being frugal, which means being economical, avoiding waste, and being careful with resources. A frugal person is one who manages their finances wisely and does not indulge in excessive or unnecessary spending.

The other choices do not encapsulate the opposite concept. Wasteful aligns closely with prodigal rather than opposing it. Generous might suggest a willingness to give or share resources, but it does not inherently imply prudence or the avoidance of waste. Hasty implies acting quickly, which is not related to the carefulness signified by frugality or the extravagant nature of prodigality. Thus, frugal is the most appropriate antonym for prodigal.