Orthodox

Webster's Dictionary of the English Language

·adj Approved; conventional.

II. Orthodox ·adj According or congruous with the doctrines of Scripture, the creed of a church, the decree of a council, or the like; as, an orthodox opinion, book, ·etc.

III. Orthodox ·adj Sound in opinion or doctrine, especially in religious doctrine; hence, holding the Christian faith; believing the doctrines taught in the Scriptures;

— opposed to heretical and heterodox; as, an orthodox Christian.