dissenter
[noun]
Synonyms: objector, dissident, nonconformist

[TahlilGaran] English Synonym Dictionary ▲

dis‧sent‧er /dɪˈsentə $ -ər/ noun [countable]

1. a person or organization that disagrees with an official decision or accepted opinion:
Political dissenters were imprisoned.

2. (also Dissenter) someone in the past who did not accept the beliefs of the established Protestant church in Western Europe Synonym : non-conformist

[TahlilGaran] Dictionary of Contemporary English ▲