Definition of dissonance
1a : lack of agreement the dissonance between the truth and what people want to believe especially : inconsistency between the beliefs one holds or between one's actions and one's beliefs — compare cognitive dissonance
b : an instance of such inconsistency or disagreement the mingling of bitter comedy and stark tragedy produces sharp dissonances— F. B. Millett
2 : a mingling of sounds that strike the ear harshly : a mingling of discordant sounds especially, music : a clashing or unresolved musical interval or chord
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