Antonyms of "canceling out" include enhancing, empowering, promoting, reinforcing, building, strengthening, emphasizing, supporting, and amplifying. When something enhances or promotes another thing, it increases its positive impact, rather than nullifying or canceling it out. Reinforcing and strengthening something makes it more durable and effective, rather than weakening it. Emphasizing and supporting work to highlight the important aspects of something, rather than downplaying or canceling them out. Amplifying increases the volume or intensity of something, rather than neutralizing or canceling it out. All of these antonyms emphasize the positive impact of actions and ideas and work towards enhancing, strengthening, and promoting them rather than canceling them out.