Antonyms for the word "profligatenesses" would be thriftiness, frugality, prudence, restraint, and parsimony. Profligateness refers to the act of being wasteful or extravagant with money, resources, or time. Thus, the opposite of this would be to use resources wisely, save for rainy days, and make responsible decisions when it comes to spending. Thriftiness refers to the ability to be economical and prudent, whereas frugality emphasizes living within one's means. Meanwhile, prudence and restraint involve exercising caution and self-control to avoid impulsive, wasteful behavior. Lastly, parsimony emphasizes being extremely conservative with one's resources, sometimes even at the expense of quality or comfort.