1. (n.) The state of disagreeing; a being at variance; dissimilitude; diversity.

2. (n.) Unsuitableness; unadaptedness.

3. (n.) Difference of opinion or sentiment.

4. (n.) A falling out, or controversy; difference.

abnegation agreement to disagree alienation altercation antagonism antipathy antithesis apostasy argument averseness aversion backwardness ban blackball blackballing clash clashing collision complaint conflict confrontation contention contradiction contradistinction contraindication contraposition contrariety contrast controversy counter-culture counterposition cross-purposes cursoriness debate declension declination declinature declining denial departure deprivation deviation difference difference of opinion difficulty dim view disaccord disaccordance disallowance disappointment disapprobation disapproval disclaimer disclamation disconformity discongruity discontent discontentedness discontentment discord discordance discordancy discrepancy discreteness disenchantment disesteem disfavor disgruntlement disillusion disillusionment disinclination disobedience disparity displeasure dispute disrelish disrespect dissatisfaction dissension dissent dissentience dissidence dissimilarity distaste distinction distinctness divergence divergency diversity dividedness division dropping out exclusion far cry foot-dragging fractiousness grudging consent grudgingness heterogeneity holding back hostility inaccordance incompatibility incongruity inconsistency inconsonance indignation indisposedness indisposition indocility inequality inharmoniousness inharmony inimicalness intractableness irreconcilability lack of enthusiasm lack of zeal low estimation low opinion minority opinion misunderstanding mixture mutinousness nay negation negative negative answer nix no nolition nonacceptance nonagreement nonassent noncompliance nonconcurrence nonconformance nonconformism nonconformity nonconsent nonobservance objection obstinacy odds oppositeness opposition opposure oppugnance oppugnancy originality ostracism otherness perfunctoriness perversity polarity polarization protest quarrel recalcitrance recalcitrancy recantation recusance recusancy refractoriness refusal rejection reluctance renitence renitency repudiation repugnance resistance retention rhubarb secession separateness showdown slowness strife stubbornness sulk sulkiness sulks sullenness thumbs-down turndown unconformity underground unenthusiasm unhappiness unlikeness unorthodoxy unwillingness variance variation variegation variety withdrawal withholding