Dissonant means clashing in sound or in feeling. A dissonant chord, dissonant voices, a dissonant note in the report.
In music what counts as dissonant has shifted enormously — intervals that scandalised the middle ages are ordinary now, so the word describes a relationship rather than a fixed fact. Cognitive dissonance is the discomfort of holding two beliefs that clash.
1adjectivedissonantClashing in sound or in feeling.
“The pianist ended the piece on a harsh, dissonant chord that made the audience shiver.”
dissonant is a quality of clashing.
Latin dissonans means disagreeing in sound — dis-, apart, plus sonare, to sound.
Middle French
dissonant
English, today
dissonant
From Middle French dissonant.
Etymology from Wiktionary, CC BY-SA