/
ˈhɛrɪsi/
n.
(pl. heresies)
- belief or opinion contrary to orthodox religious (especially Christian) doctrine.
- opinion profoundly at odds with what is generally accepted.
Etymology
ME: from OFr. heresie, based on L. haeresis, from Gk hairesis ‘choice’ (in eccles. Gk ‘heretical sect’).