[n] the act of protesting; a public (often organized) manifestation of dissent
[n] a difference of opinion
[n] (law) the difference of one judge's opinion from that of the majority; "he expressed his dissent in a contrary opinion"
[v] withhold assent; "Several Republicans dissented"
[v] be of different opinions; "I beg to differ!"; "She disagrees with her husband on many questions"
[v] fight back, also metaphorically; "His body protested against the harsh training"
arise, boycott, clash, contradict, contradict, contravene, controvert, demonstrate, demonstration, differ, direct action, disagree, disagreement, dissent, manifestation, march, negate, objection, oppose, rebel, renegade, resistance, rise, rise up, strike, take issue, walk out