The antonyms for the word "dis-union" are union, harmony, unity, agreement, and concord. These words signify the presence of agreement, cooperation, and collaboration instead of division and conflict. Union refers to the act of joining together, and it represents strength in numbers. Harmony entails the pleasing combination of sounds or ideas, while unity denotes a shared purpose or identity. Agreement connotes the accord of ideas, opinions, or actions, and concord refers to the peaceful coexistence of people or nations. These antonyms of dis-union promote inclusivity and positivity, emphasizing the importance of working together towards common goals.