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