Meaning of HERETICAL in English
A belief or action that is ~ is one that most people think is wrong because it disagrees with beliefs that are generally accepted.
I made the then ~ suggestion that it might be cheaper to design new machines.
A belief or action that is ~ is one that seriously disagrees with the principles of a particular religion.
The Church regards spirit mediums and people claiming to speak to the dead as ~.
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012