Antonyms for the word "are unison" can refer to words that are diametrically opposed in meaning. Some of the antonyms for the word "are unison" include disagreement, discord, and dissonance. When people are not in unison, they may disagree on an issue, which could lead to discord or dissonance. Conversely, when two or more things are in unison, they are harmoniously working together. Therefore, as an antonym, discordance represents the opposite; there is disharmony between people. Consequently, being aware of antonyms helps to enrich our vocabulary and enable us to communicate more expressively.