The term "art ready" means that something is prepared and equipped for artistic expression. However, there are several antonyms for this phrase, which would imply that something is not ready or suitable for art. For example, the opposite of "art ready" could be "artless," which simply means lacking in artistic quality and substance. Another antonym could be "uninspired," indicating a lack of creative inspiration or originality. "Inept" or "amateurish" could also be antonyms for "art ready," implying a lack of skill or proficiency in artistic endeavors. Ultimately, the antonyms for "art ready" suggest a lack of preparation, inspiration, or ability to express oneself creatively.