noun (n)

• conformity to reality or actuality(noun.state)

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

  source: wordnet30
• the quality of being loyal(noun.attribute)

  Synonym:
  loyalty
  Antonym:
  disloyalty
  

  source: wordnet30
• exactness of adjustment(noun.attribute)

  Example:
  I marveled at the trueness of his aim.
  

  source: wordnet30
• The quality of being true; reality; genuineness; faithfulness; sincerity; exactness; truth.(noun)

  source: webster1913