The word luxuriousnesses implies wealth and extravagance. Its antonyms, on the other hand, denote modesty, frugality, and simplicity. Some antonyms for luxuriousnesses are austerity, economy, plainness, and sparseness. People who live a simple life, devoid of lavish possessions, may describe their living conditions as humble, unassuming, or even minimal. Austerity may refer to a lifestyle or government policies that prioritize saving and restraint over indulgence and opulence. Economy may denote practicality and efficiency in the use of resources. By contrast, luxuriousnesses suggest opulence, lavishness, and overindulgence in food, clothing, or living conditions. In conclusion, antonyms for luxuriousnesses connote more modest ways of living, prioritizing simplicity over extravagance.