Etymograph

English

orthodox

Orthodox comes from Ancient Greek ὀρθόδοξος ‘orthodox (in religion)’.

  1. Ancient Greekc. 800–300 BCEὀρθόδοξοςorthódoxos‘orthodox (in religion)’
  2. Late Latinc. 200–600 CEorthodoxus
  3. Middle Frenchc. 1400–1600orthodoxe
  4. Middle Englishc. 1150–1500same form
  5. Englishearliest quotation 1838orthodox

attested reconstructed ? uncertain or disputed

Lineage

  1. Ancient Greekc. 800–300 BCEὀρθόδοξοςorthódoxos‘orthodox (in religion)’
  2. Late Latinc. 200–600 CEorthodoxus
  3. Middle Frenchc. 1400–1600orthodoxe
  4. Middle Englishc. 1150–1500same form
  5. Englishearliest quotation 1838orthodox

Earliest quotation: 1838, Edward Bulwer-Lytton, London: Saunders and Otley: “She tattled on: first to one, then to the…”

A compound of ὀρθός ‘straight’ + δόξα ‘opinion’

Proto-Indo-European *h₃erdʰ- ‘upright’

Proto-Indo-European *h₃r̥dʰwós

Proto-Hellenic *ortʰwós

Ancient Greek ὀρθός ‘straight’

Proto-Indo-European *deḱ- ‘to accept’

Proto-Indo-European *dóḱs(e)h₂

Ancient Greek δόξα ‘opinion’

Today it means

adj Conforming to the accepted, established, or traditional doctrines of a given faith, religion, or ideology.

Language periods are conventional ranges, not dates for this word.

Etymograph / Ancient Greek ὀρθόδοξος / orthodox