- opinion or doctrine at variance with the orthodox or accepted doctrine, especially of a church or religious system.
- the maintaining of such an opinion or doctrine.
- the willful and persistent rejection of any article of faith by a baptized member of the church.
- any belief or theory that is strongly at variance with established beliefs, customs, etc.
- an opinion or doctrine contrary to the orthodox tenets of a religious body or church
- the act of maintaining such an opinion or doctrine
- any opinion or belief that is or is thought to be contrary to official or established theory
- belief in or adherence to unorthodox opinion
