Characterized by disagreement or lacking harmony; conflicting or incongruous.
From disaccord + -ant suffix (which forms adjectives meaning 'characterized by' or 'having the quality of'). This Latin-influenced suffix was productive in English from the medieval period onward.
In music and writing, 'disaccordant' would mean sounds or ideas that clash rather than harmonize—it's a more formal way of saying 'they don't fit together well.'
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