adjective (a)

• of or pertaining to or characteristic of Judaism(adj.pert)

  Example:
  Orthodox Judaism.
  

  Synonym:
  jewish-orthodox
  

  source: wordnet30
• adhering to what is commonly accepted(adj.all)

  Example:
  An orthodox view of the world.
  

  Antonym:
  unorthodox
  

  source: wordnet30
• of or relating to or characteristic of the Eastern Orthodox Church(adj.pert)

  Synonym:
  eastern orthodox, greek orthodox, russian orthodox
  

  source: wordnet30
• 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.(adjective)

  source: webster1913