Webster’s 1913 has no entry under this spelling.
Shades of meaning
Fernald has no entry of its own for non-conformist; he lists it under heretic.
Where he writes about it:
Dissenter and non-conformist are terms specifically applied to English subjects who hold themselves aloof from the Church of England; the former term is extended to non-adherents of the established church in some other countries, as Russia. — from heretic
Antonyms
none given