heterodox

Etymology

From Ancient Greek ἑτερόδοξος (heteródoxos), from ἕτερος (héteros, “other, another, different”) + δόξα (dóxa, “opinion”).

adj

1. Of or pertaining to creeds, beliefs, or teachings, especially religious ones, that are different from what a religion (or sect) believes to be orthodox, but adhering to that religion's established beliefs, and therefore not heretical.
   Most Christian denominations consider each other heterodox.
   Do you believe such people are happy in the other world, sir? {...} I declined answering Mrs. Dean’s question, which struck me as something heterodox. 1847, Emily Brontë, chapter XVI, in Wuthering Heights