What is the opposite of "prodigal"?

The term "prodigal" refers to someone who is excessively wasteful or extravagant in the use of resources, especially money. Therefore, the opposite of this behavior would be characterized by careful and prudent management of resources.

The correct answer, "frugal," embodies the idea of being economical, avoiding waste, and making thoughtful decisions about expenditures. A frugal person typically prioritizes saving money and using resources wisely, which stands in stark contrast to the wasteful tendencies of a prodigal individual.

Other options like "wasteful," "lavish," and "opulent" all suggest extravagant or excessive spending and resource use, aligning more closely with the concept of being prodigal rather than opposing it. This highlights why the option "frugal" is the most appropriate antonym for "prodigal."