"Art racked" is not a word or phrase that exists in the English language, therefore, it is impossible to provide antonyms for it. However, in the context of art, one can consider antonyms for the word "artistic." Some possible antonyms could be unartistic, uncreative, ordinary or uninspired. These words imply a lack of imagination or originality, which is the opposite of what artists aim to achieve. On the other hand, antonyms for the word "racked" could be aligned, straightened, or organized. These words suggest a sense of order and structure, which is important in displaying artworks in a presentable manner.