dissent

v. disagree on, differ, dispute, oppose

n. opposition, disagreement, discord, conflict

For the political magazine, see Dissent (magazine). For the G8 protest group, see Dissent! (network). For a judicial opinion which is contrary to a majority decision, see Dissenting opinion. Dissent is a sentiment or philosophy of non-agreement or opposition to an idea (eg. a government's policies) or an entity (eg. an individual or political party which supports such policies). The term's antonyms include , consensus (when all or nearly all parties agree on something) and consent (when one party agrees to a proposition made by another).
See more at Wikipedia.org...

Noun
1. (law) the difference of one judge's opinion from that of the majority; "he expressed his dissent in a contrary opinion"
(hypernym) objection
(derivation) disagree, differ, take issue
(classification) law, jurisprudence
2. a difference of opinion
(hypernym) disagreement
(derivation) disagree, differ, take issue
3. the act of protesting; a public (often organized) manifestation of dissent
(synonym) protest, objection
(hypernym) resistance
(hyponym) boycott
(derivation) protest, resist
Verb
1. withhold assent; "Several Republicans dissented"
(antonym) assent, accede, acquiesce
(hypernym) disagree, differ, take issue
2. express opposition through action or words; "dissent to the laws of the country"
(synonym) protest, resist
(hypernym) oppose, controvert, contradict
(hyponym) strike, walk out
(derivation) protest, objection
3. be of different opinions; "I beg to differ!"; "She disagrees with her husband on many questions"
(synonym) disagree, differ, take issue

v. say, tell; mention, put, state; admit

(v. i.)
To differ; to be of a contrary nature.
  

(v. i.)
To differ in opinion; to be of unlike or contrary sentiment; to disagree; -- followed by from.
  

(v. i.)
To differ from an established church in regard to doctrines, rites, or government.
  

(n.)
The act of dissenting; difference of opinion; refusal to adopt something proposed; nonagreement, nonconcurrence, or disagreement.
  

(n.)
Separation from an established church, especially that of England; nonconformity.
  

(n.)
Contrariety of nature; diversity in quality.