The antonyms for the phrase "making useless" include several terms that express the opposite of destroying or ruining something. Some of these words include preserving, conserving, saving, protecting, and enhancing. These terms suggest that the object, tool, or resource is being maintained for future use or improved to make it more valuable or efficient. Other antonyms for the phrase "making useless" include terms such as repairing, restoring, rejuvenating, and reviving, which indicate that something that may have been damaged or neglected is being brought back to life or being renewed. These antonyms demonstrate the importance of valuing and taking care of things that have the potential to benefit our lives.