Dissonance

n.	1.	A mingling of discordant sounds; an inharmonious combination of sounds; discord. Filled the air with barbarous dissonance. - Milton.
	2.	Want of agreement; incongruity.

Noun	1.	dissonance - a conflict of people's opinions or actions or characters Synonyms: disagreement, dissension
	2.	dissonance - the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience; "modern music is just noise to me" Synonyms: noise, racket
	3.	dissonance - disagreeable sounds Antonyms: harmony - an agreeable sound property

antagonism, argumentation, atonalism, atonality, cacophony, clashing, clinker, conflict, contention, contradiction, contrariety, contrast, controversy, departure, deviation, difference, disaccord, disaccordance, disagreement, disconformity, discongruity, discord, discordance, discordancy, discrepancy, discreteness, disharmony, disparity, dissension, dissent, dissidence, dissimilarity, dissonancy, dissonant chord, distinction, distinctness, disunion, disunity, divergence, divergency, diversity, faction, far cry, flatness, heterogeneity, inaccordance, incompatibility, incongruity, inconsistency, inconsonance, inequality, inharmoniousness, inharmony, irreconcilability, jarring, mixture, negation, nonconformity, odds, off note, opposition, oppugnancy, otherness, repugnance, separateness, sharpness, sour note, sourness, stridor, strife, tunelessness, unconformity, unharmoniousness, unlikeness, unmusicality, unorthodoxy, untunefulness, variance, variation, variegation, variety, wolf