The word "ungaudy" refers to something that is plain, simple, and unembellished. Some of the antonyms for "ungaudy" are flamboyant, gaudy, flashy, ostentatious, and extravagant. These words describe something that is showy, ornate, and designed to attract attention. Other antonyms for "ungaudy" include colorful, bright, striking, and bold. These words are often used to describe something that is visually appealing and attractive. While the word "ungaudy" has a negative connotation, these antonyms are often used to describe positive attributes of something that is visually impressive and memorable.