THESAURUS
agreement to disagree, alienation, apostasy, difference, disaccord, disagreement, disapprobation, disapproval, disparity, dissatisfaction, dissension, dissent, dissentience, dissidence, diversity, dropping out, minority opinion, nonagreement, nonassent, nonconcurrence, nonconformity, nonconsent, opposition, recusance, recusancy, rejection, repudiation, secession, underground, variance, withdrawal