Un-stylish is a term used to describe something that lacks in fashion, elegance, or trendiness. Its antonyms represent words that convey the opposite meaning of un-stylish. Stylish, sophisticated, elegant, fashionable, trendy, and chic are some of the antonyms of un-stylish. Stylish refers to something that is fashionable, trendy or elegant, which makes it an excellent antonym of un-stylish. Sophisticated and elegant suggest a high degree of refinement, and the word fashionable means anything that is currently in fashion. Trendy is an antonym of un-stylish that refers to a style that is fashionable and trendy, and chic refers to anything that is trendy and fashionable with a sense of sophistication.