As an adjective heretics
As a noun heresy is
(religion) a doctrine held by a member of a religion at variance with established religious beliefs, especially dissension from roman catholic dogma.
(religion) A doctrine held by a member of a religion at variance with established religious beliefs, especially dissension from Roman Catholic dogma.
* 1968 , History of Western Civilization, edited by Heyes, Baldwin & Cole, p.47. Macmillan. Library of Congress 67–13596
A controversial or unorthodox opinion held by a member of a group, as in politics, philosophy or science.
- Heresy meant deliberate departure from the accepted doctrines of the church. It was intellectual and spiritual dissent and concerned the beliefs of Christianity, not the morals of its adherents.