The word un-couth refers to behavior that is uncivilized, awkward, or lacking manners. There are several antonyms for this word, such as cultured, polished, refined, suave, and sophisticated. Cultured denotes a person who displays a high level of taste or knowledge in the arts, literature, and music. Polished refers to someone who is elegant, graceful, and poised in their behavior. Refined means someone who has good manners, taste, and high standards. Suave indicates a person who is charming, confident, and elegant in their behavior. Finally, sophisticated refers to a person who is knowledgeable, worldly-wise, and experienced in social situations. These words represent the opposite of un-couth and are used to describe people who are refined, cultured, and sophisticated.