1. (n.) Soundness in some established standard faith; a belief in the doctrines taught in the Scriptures\; -- opposed to heterodoxy or to heresy.

2. (n.) Consonance to genuine Scriptural doctrines; -- said of moral doctrines and beliefs; as, the orthodoxy of a creed.

3. (n.) By extension, said of any correct doctrine or belief.

accommodation accord accordance acquiescence adaptation adaption adjustment agreement belief compliance conformance conformation other-direction conformity congruity consistency conventionality correspondence credo creed doctrine faith firmness flexibility fundamentalism hardness harmony impliability inexorability inflexibility keeping line malleability obduracy obdurateness obedience observance obstinacy pliancy precisianism purism puritanism reconcilement reconciliation relentlessness religion religious belief religious faith rigidity rigidness rigor rigorousness stiffness strictness stubbornness system of beliefs teaching theology tradition traditionalism unbendingness uncompromisingness uniformity unrelentingness unyieldingness