Dis-unite refers to the act of separating or breaking apart something that was previously united. The antonyms for this word are used to describe actions that bring people or things together. The first antonym for dis-unite is "unify," which means to join together to form a single unit. The second antonym is "reconcile," which involves the act of returning to a state of unity after a period of conflict or disagreement. The third antonym is "merge," which involves combining two or more entities into one. All these antonyms represent the opposite of dis-unite and encompass the idea of bringing people or things together.