When thinking of antonyms for the phrase "art part of," some possible opposites may include "mundane," "ordinary," and "utilitarian." Whereas art is often associated with creativity, beauty, and aesthetics, these antonyms connote the idea of practicality, functionality, and simplicity. Another antonym for "art part of" could be "absence" or "void," as these words imply the lack of artistic expression or any creative output at all. However, it's worth noting that these antonyms may not be absolute or definitive, as some objects or activities may contain both artistic and utilitarian elements at the same time.