When we hear the phrase "art up to ears in", it usually signifies an abundance of artistic creativity or involvement. However, as with any term, there are also antonyms that convey the opposite meaning. These could include "artless," "uninspired," or "uncreative." Other possible antonyms might be "uninvolved," "indifferent," or "uninterested." These negative terms imply a lack of artistic aptitude or interest, rather than the full immersion in art that the original phrase denotes. In the end, whether we use the original phrase or its antonyms depends on the context and the desired effect.