dissent

1 a lack of agreement or harmony considerable dissent within the party's rank and file Synonyms conflict, disaccord, discordance, discordancy, disharmony, dissension (also dissention), discord, dissidence, dissonance, disunion, disunity, division, friction, infighting, inharmony, schism, strife, variance, war, warfareRelated Words clash, collision, competition, contention; altercation, argument, bicker, brawl, debate, disagreement, dispute, divide, fissure; falling-out, fight, hassle, jar, miff, mix-up, quarrel, row, run-in, scrap, spat, squabble, tiff, wrangle; incompatibility, incongruence, incongruity, incongruousness, inconsistence, inconsistency, inconsonance, inharmoniousness; animosity, antagonism, antipathy, cold war, enmity, hostility, ill will, rancorNear Antonyms concurrence, cooperationAntonyms accord, agreement, concord, concordance, harmony, peace

2 departure from a generally accepted theory, opinion, or practice the church reacted to any form of dissent by promptly excommunicating its proponents Synonyms heresy, dissidence, heterodoxy, nonconformityRelated Words error, fallacy, falsehood, misbelief, misconception, myth; apostasy, defection, infidelity, schism, scission, sectarianism, separatism; deviance, deviation, iconoclasm, unconventionality; disagreement, discord, dissension (also dissention)Near Antonyms agreement, conformation, conventionalityAntonyms conformity, orthodoxy

to have a different opinion anyone who dissented was encouraged to speak out while they had the chance Synonyms differ, disagree, nonconcurRelated Words clash, collide, conflict, contrast; counter, debate, object, oppose, protest, resist; contest, dispute; argue, bicker, fall out, quarrelNear Antonyms accede, accept, acquiesce, comply, consent, defer, subscribe; affiliate, ally, associate, collaborate, collude, come round, compromise, cooperate, get along, sideAntonyms agree, assent, concur