Most unstylish is an expression that indicates something is completely lacking in style or sophistication. The antonyms, on the other hand, refer to qualities that are refined, elegant, and tasteful. Classic, elegant, chic, stylish, trendy, and fashionable are some of the words that can be used as antonyms for most unstylish. To be described as stylish means to be well-dressed, polished, and impeccably groomed. It implies a high level of taste and attention to detail. When we use antonyms instead of most unstylish, we give the impression of something that is attractive, pleasing, and admirable, rather than unappealing, dull, or distasteful.