Flaunty is an adjective used to describe someone or something which is showy, ostentatious, or pretentious. Its opposite, therefore, is a word that signifies simplicity, modesty, or a lack of ornamentation. Some antonyms for flaunty include unassuming, unostentatious, humble, plain, and low-key. These words are suitable to describe people who are not fond of attention or those who prefer to keep things simple and straightforward. For instance, a person who dresses in plain clothing and avoids flashy accessories is unostentatious. Similarly, a humble individual is one who does not brag or show off their accomplishments. Therefore, while flaunty suggests overabundance and extravagance, its antonyms represent a more subdued approach to life.