The phrase "art possession of" refers to the ownership or control of art. Its antonyms would include "artlessness," "lack of possession," "absence of ownership," and "dispossession." These words suggest the absence of control over art, whether it is due to a lack of resources or the inability to acquire it. Additionally, "artlessness" implies a lack of appreciation or understanding of art. Overall, the antonyms of "art possession of" highlight the importance of ownership and control in the art world, and suggest that without it, one may not fully appreciate the beauty and value of art.