The antonyms for the phrase "was unison" are varied and can include an array of different words. A few antonyms for this phrase could be dissonance, cacophony, discord, unrest, and disagreement. The antonyms for "was unison" typically refer to a lack of unity or agreement and can have negative connotations. These words can be used to describe situations where people, groups, or entities are not in agreement or operating harmoniously. In contrast, words similar to unison or unity such as harmony, agreement, consensus, and concord convey the opposite meaning and describe situations where there is a sense of oneness or cooperation amongst individuals or groups.