Synonyms and related words :
agree to disagree, be at cross-purposes, break, break bounds, break off, break step, clash, collide, conflict, contradict, counter, differ, disaccord, disagree, dissent, drop out, jangle, jar, jostle, make waves, mismatch, mismate, negate, nonconform, not comply, not conform, object, opt out, protest, rock the boat, vary