Artsy-craftsy is a term used to describe something excessively decorated or showy. Its antonyms are simple, plain, and understated. Simple refers to uncomplicated or without extravagance. Plain means unadorned or not decorated. Understated is subtle or not flashy. Other antonyms for artsy-craftsy include natural, organic, austere, and minimalistic. Natural refers to something that is not man-made, while organic means related to nature. Austere means severe, ascetic, or without luxury, and minimalistic means having only what is necessary or essential. All these antonyms can be used to describe objects or designs that are simple, unadorned, and lacking in excessive decoration.