noun (n)

• conformity to reality or actuality(noun.state)

  Synonym:
  the true, trueness, truth
  Antonym:
  falseness, falsity
  

  source: wordnet30
• an enduring or necessary ethical or religious or aesthetic truth(noun.cognition)

  source: wordnet30
• The quality or state of being true, or real; consonance of a statement, proposition, or other thing, with fact; truth; reality.(noun)

  source: webster1913