Thayer's Greek Lexicon

 1. to make manifest or visible or known what has been hidden or unknown,
to manifest, whether by words, or deeds, or in any other way
  1) make actual and visible, realised
  2) to make known by teaching
  3) to become manifest, be made known
  4) of a person
1d1. expose to view, make manifest, to show one's self, appear
  5) to become known, to be plainly recognised, thoroughly understood
1e1. who and what one is

For Synonyms see entry G5812