Antonyms for the phrase "puts out of misery" include "spares," "saves," "rescues," and "heals." These words imply the opposite action of the phrase, which is to alleviate pain or suffering rather than to end it. Other antonyms could be "comforts," "soothes," "calms," or "eases." These words suggest a gentle approach to dealing with pain or suffering, rather than resorting to drastic measures. In short, antonyms for "puts out of misery" emphasize the importance of compassion, empathy, and kindness in the face of suffering, rather than simply seeking a quick fix.