The word "deteriorating" means worsening or declining, and there are several antonyms (words with the opposite meaning) for this term. One antonym for "more deteriorating" is improving, which means becoming better or making progress. Another antonym is advancing, which refers to moving forward or making positive strides. Other antonyms for deteriorating include flourishing, thriving, prospering, and developing. All these words indicate a positive trend or progress in a particular area, whether it's health, business, relationships, or any other aspect of life. Using such antonyms can help express optimism, hope, and positivity in various contexts.