The phrase "art ablaze" denotes an image of fiery and explosive creativity. Antonyms for this term could include words that communicate a sense of dullness or lack of inspiration, such as "artless," "uninspired," and "tame." Other opposite words might express a calm, subtle approach to creativity, such as "gentle," "mild," or "nuanced." Alternatively, one could focus on contrasting the idea of vivid, joyous creativity with darker, more somber themes. Antonyms in this vein might include "bleak," "dreary," or "depressing." Ultimately, the choice of antonyms for "art ablaze" depends on what qualities the writer wishes to emphasize in the contrast.