The phrase "were one mind" implies unity and agreement, so its antonyms would include words related to disagreement and disunity. Some possible antonyms for "were one mind" might include "divided," "discordant," "disagreeing," "disputing," "conflicting," "opposing," "contradictory," "dissonant," or "dissenting." These words suggest that people or groups are not in alignment with each other and may hold different views or opinions. In contrast to the cooperative nature of "were one mind," these antonyms suggest a lack of harmony and may indicate a need for further discussion or resolution.