(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.

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