Heretic(n.)
- One who holds to a heresy; one who believes some doctrine contrary to the established faith or prevailing religion.
Heretic(n.)
- One who having made a profession of Christian belief, deliberately and pertinaciously refuses to believe one or more of the articles of faith \"determined by the authority of the universal church.\"
Heretical(a.)
- Containing heresy; of the nature of, or characterized by, heresy.