noun
disagreement, disapproval
Synonyms: bone, bone of contention, bone to pick, clinker, conflict, contention, denial, difference, disaccord, discord, dissension, dissidence, disunity, far cry, flak, hassle, heresy, heterodoxy, misbelief, nonagreement, nonconcurrence, nonconformism, nonconformity, nope, objection, opposition, poles apart, protest, refusal, resistance, schism, sour note, spat, split, strife, unorthodoxy, variance
Antonyms: agreement, approval, authorization, concurrence, endorsement, ratification, sanction
verb
disagree
Synonyms: argue, balk, break with, buck, contradict, decline, demur, differ, disaccord, discord, divide, fly in the face of, object, oppose, pettifog, protest, put up a fight, put up an argument, refuse, say not a chance, say nothing doing, say no way, shy, stickle, vary, wrangle
Antonyms: agree, approve, assent, authorize, concur, consent, endorse, ratify, sanction