The word "concorded" implies an agreement or harmony between two or more parties. Its antonyms would be words that suggest disagreement, discord, or conflict. Some possible antonyms for "concorded" might include words like "disagree," "argue," "oppose," "contradict," "contest," "resist," "defy," "dissent," "fractious," and "contentious." Other antonyms might include words like "disunion," "division," "schism," "disunity," "separation," "hostility," "animosity," "rancor," and "enmity." These words all suggest a lack of cooperation, collaboration, or consensus, and are therefore the precise opposite of "concorded.