nonconformist has 4 distinct synonyms spread across 4 of its 4 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its 2 recorded opposites are Anglican, conformist.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a Protestant in England who is not a member of the Church of England
someone who refuses to conform to established standards of conduct
not conforming to some norm or socially approved pattern of behavior or thought
“their rabidly nonconformist deportment has made them legendary”
not conforming to established customs or doctrines especially in religion
Synonyms, antonyms and the broader and narrower relations for nonconformist come from Princeton University’s WordNet. Full sources and licences.