Which word would best describe a person who plans and saves for the future?

The word "provident" is the best choice for describing a person who plans and saves for the future because it specifically denotes the quality of being careful about the future, particularly in terms of managing resources wisely. A provident individual is someone who anticipates potential needs and takes proactive steps to ensure their financial stability or security. This quality reflects a sense of foresight and responsible planning, making it the most fitting descriptor for someone who saves and prepares for future circumstances.

In contrast, terms like "squanderous" and "frivolous" imply recklessness or a lack of concern for future consequences, which directly contradicts the notion of planning and saving. "Wardrobed" is unrelated to financial planning or future-oriented behavior, as it pertains to clothing or attire, making it irrelevant in this context. Thus, "provident" stands out as the most appropriate word in this scenario, encapsulating the essence of foresight and prudence.