hæresy

Noun

heresy (countable and uncountable, plural heresies)

1. A doctrine held by a member of a religion at variance or conflict with established religious beliefs.
   • 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.1968, History of Western Civilization, edited by Heyes, Baldwin & Cole, p.47. Macmillan. Library of Congress 67–13596

   Synonyms:

   misbelief

   Antonyms:

   orthodoxy

2. (broadly) A controversial or unorthodox opinion held by a member of a group, as in politics, philosophy or science.
   • I'm going to declare a heresy for you. All science, if you go back into its roots, saying: 'Why do I believe this?' 'Well, I believe this because of these tests and this proof.' 'Well, why do I believe this?' 'Why did I set up this test?' 'Why did I believe that proof?' All science goes back to...1985 April 17, Frank Herbert, 15:58 from the start, in Frank Herbert speaking at UCLA 4/17/1985, UCLACommStudies, archived from the original on 10 Feb 2017