Contrary to, or differing from, some acknowledged standard, as the Bible, the creed of a church, the decree of a council, and the like; not orthodox; heretical; -- said of opinions, doctrines, books, etc., esp. upon theological subjects.

Holding heterodox opinions, or doctrines not orthodox; heretical; -- said of persons.

An opinion opposed to some accepted standard.

(HET·er·o·DOX). Holding beliefs or opinions contrary to right teaching. Generally applied in a church doctrine context to people not in agreement with the accepted beliefs of Orthodox Christianity. In the gentile Greco-Roman Christianity of the fourth century Judeo-Christians were rejected as heterodox as they continued with Sabbath observance and observing the Christian Passover on Nisan 14. Judeo-Christians, in kind, saw the Greco-Roman Christians as no more than Christianized pagans.

Pertaining to "other" doctrines or worship. Non orthodox yet not heretical.

characterized by departure from accepted beliefs or standards

Differing from orthodox teaching in some significant way; may occur in varying degrees.