Art shown can have many antonyms, depending on the context in which the phrase is used. Some possible antonyms include art hidden, art concealed, art suppressed, art covered, art veiled, and art obscured. Other antonyms can also be used, such as art ignored, art neglected, art overlooked, and art kept secret. These antonyms all suggest an absence or lack of visibility or attention given to the art that has been displayed or presented. They can also imply a deliberate effort to keep the art from public view or to downplay its cultural significance. Ultimately, the choice of antonym will depend on the intended meaning of the phrase and the specific context in which it is used.