A lack of agreement or harmony between things; discord or disagreement, whether in sound, relationships, or ideas.
From dis- + harmony (from Greek harmonia meaning 'fitting together,' 'concord'). Emerged in Middle English, becoming common in the 1600s-1700s to describe musical and social discord.
Disharmony is incredibly useful in storytelling and drama—perfect harmony is boring, so great writers deliberately introduce disharmony to create tension and make their narratives interesting and emotionally compelling.
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