Catchpenny refers to something that is cheaply made or of low quality. Therefore, antonyms for most catchpenny would include high-quality, luxurious, refined, and elegant. These words describe items that are well-made and often expensive. Other antonyms could include exclusive, sophisticated, rare, and unique. These words suggest that the item is one-of-a-kind or difficult to obtain. It is essential to note that catchpenny can also mean something that is designed to appeal to a mass audience, so antonyms could also include niche or specialized. In conclusion, the antonyms for most catchpenny depend on the context it is used in.