Dissent is the sentiment of non-agreement. The term is most often used when this sentiment is combined with the action of expressing such opinion, especially when this results in (or threatens to result in) oppression, a more personal stance than is referred to by political opposition
. Dissent is the opposite of agreement
Such personal dissent can be a driving force for social development, but can also be a road to isolation and defeat.
See also civil disobedience, whistleblower, faction, spin-off, Noam Chomsky.