orthodox

adjective

Of or pertaining to the Orthodox Churches collectively.
Of or pertaining to a particular Orthodox Church, usually the Eastern Orthodox Church, sometimes the Oriental Orthodox Church or the Church of the East.
Of or pertaining to Orthodox Judaism.
Of or pertaining to the Orthodox Quakers, a group of Quakers (subdivided into the Wilburite, Gurneyite and Beaconite branches) who split with the Hicksite Quakers due to favoring adopting mainstream Protestant orthodoxy.
“[...which] Doherty hypothesized as the controlling variable for predicting who would become Orthodox or who would be Hicksite.”

An Orthodox Christian.
“The Greek Orthodox population of the 62 bishoprics in 1886 numbered 65,549,096. to which the Orthodoxes of the army and navy must be added.”
“1984, David Gillard (ed.), British documents on foreign affairs: Reports and papers from the Foreign Office confidential print, Part I: From the mid-nineteenth century to the First World War, Series B: The Near and Middle East, 1856-1914, page 31. The Greek Catholic priesthood, who proselytize among the Orthodoxes, are specially favoured, and donations are given for Masses in the churches of the Capuchin and the Franciscan Friars.”
An Orthodox Jew.