Dissension(n.) Disagreement in opinion, usually of a violent character, producing warm debates or angry words; contention in words; partisan and contentious divisions; breach of friendship and union; strife; discord; quarrel.
Thesaurus Entries
aggressiveness, agreement to disagree, alienation, altercation, antagonism, antipathy, apostasy, argument, argumentation, bad blood, bellicosity, belligerence, bickering, clashing, collision, combativeness, competition, conflict, contention, contentiousness, contradiction, contrariety, contrariness, controversy, counter-culture, cross-purposes, difference, disaccord, disaccordance, disagreement, disapprobation, disapproval, discord, discordance, discordancy, discrepancy, disharmony, disparity, dispute, dissatisfaction, dissent, dissentience, dissidence, dissonance, disunion, disunity, divergence, diversity, dropping out, enmity, faction, factiousness, flak, fractiousness, friction, hostility, inaccordance, inequality, infighting, inimicalness, irascibility, irritability, jarring, litigiousness, minority opinion, negation, negativeness, nonagreement, nonassent, nonconcurrence, nonconformity, nonconsent, noncooperation, obstinacy, opposition, oppugnancy, partisan spirit, partisanship, perverseness, pugnacity, quarrel, quarrelsomeness, recalcitrance, recusance, recusancy, refractoriness, rejection, repudiation, repugnance, rivalry, secession, shrewishness, strife, uncooperativeness, underground, unharmoniousness, variance, vying, withdrawal, wrangle