1. belief or opinion contrary to orthodox religious (especially Christian) doctrine: "Huss was burned for heresy"
▪ opinion profoundly at odds with what is generally accepted:"the heresy of being uncommitted to the right political dogma"
Word OriginMiddle English: from Old French heresie, based on Latin haeresis, from Greek hairesis ‘choice’ (in ecclesiastical Greek ‘heretical sect’), from haireomai ‘choose’.