Synonyms of heretical

2 Syllables
miscreant, impious, swinger, deviant, freaker
3 Syllables
heathenish, agnostic, skeptical, schismatic, dissenting, freethinking, disagreeing, sectarian, differing, atheistic, dissident, infidel
4 Syllables
dissentive, misbelieving, revisionist, heterodox, idolatrous, unbelieving, unorthodox, nonconformist, apostate
5 Syllables
iconoclastic