How to say "heresy" in Japanese

• 異端いたんCommon
  no-adjectiveThe word for heresy in the sense of a belief or doctrine that departs from religious orthodoxy; it also covers nonconformism and paganism, and can describe an unconventional position within a field.
  異端いたんという非難ひなんに関かんしては、ここでの証拠しょうこははるかに弱よわいものである。↗

  As for the accusations of heresy, here the evidence is much weaker.
• 邪道じゃどうCommon
  nounChiefly an evil or improper course, a way of acting outside what is considered right; its heresy sense is secondary, and for religious or doctrinal heresy 異端 is the safer choice.

Choose 異端 for heresy as a belief or doctrine deviating from religious orthodoxy (it also covers nonconformism and paganism); 邪道 chiefly means an evil or improper path, fitting wrong or corrupt ways of doing things rather than doctrine.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 異端いたんheresy
• 魔道まどうheresy
• 邪宗じゃしゅうheresy
• 邪法じゃほうheresy
• 異端視いたんしheresy
• 邪教じゃきょうheretical religion
• 邪道じゃどうevil course
• 外道げどうheterodoxy