Art in cards is a term used to describe the creative aspect of designing and creating greeting cards. Some antonyms for art in cards could be mundane, plain, or generic. These words describe a lack of creativity and imagination in the design of a card. Another antonym could be unsophisticated, which implies that the card lacks elegance or refinement. Conversely, artful, creative, and original are antonyms that describe the opposite of these negative qualities. These words suggest that the card is unique, imaginative, and visually appealing. When describing art in cards, choosing the right antonym can make a big difference in how a card is perceived.