Error, heresy.

Erroneous or unorthodox religious belief; (an instance of) heresy or false religion; paganism.

Theological or religious opinion or doctrine maintained in opposition, or held to be contrary, to the ‘catholic’ or orthodox doctrine of the…

A religious following; adherence to a particular religious teacher or faith. †(a) A system of belief or observance distinctive of one of the…

The refusal or inability to accept something as true; misbelief; an instance of this.

A false or perverted religion. Obsolete.

Misbelief.

a heresy.

Heresy, irreligion. Frequently spec. with reference to Persia or the Ottoman Empire: adherence to any of various sects considered to be heretical…

A religious system with Christian, Gnostic, and pagan elements, founded in the 3rd cent. a.d. and widespread in the Roman Empire and Asia until…