Definition of "Dissent" :
noun: the act of protesting; a public (often organized) manifestation of dissent
noun: a difference of opinion
noun: (law) the difference of one judge's opinion from that of the majority
"He expressed his dissent in a contrary opinion."
verb: withhold assent
"Several Republicans dissented."
verb: be of different opinions
verb: express opposition through action or words
"Dissent to the laws of the country."