Ropey is an adjective that describes something that is of poor quality or not good enough. The word has a number of antonyms that can be used to describe things that are high-quality, exceptional, or excellent. Some antonyms for ropey include smooth, shiny, sleek, polished, refined, sophisticated, modern, contemporary, and chic. These words are often used to describe objects, products, or brands that are associated with luxury or fashion. For example, a high-end fashion brand may be known for producing polished and sleek clothing, while a modern technology company may be known for making sophisticated and contemporary products.