Past tense of discord: to disagree or fail to be in harmony.
From the verb discord (Latin discordare), with the -ed suffix added to create the past tense. Discord as a verb means to be in conflict or disagreement.
While 'discord' as a noun (disagreement) is common, using it as a verb—'they discorded on the issue'—is quite rare in modern English, making this a word most people would find unusual!
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