noun (n)

• trueness of course toward a goal(noun.attribute)

  Example:
  Rivaling a hawk in directness of aim.
  

  Synonym:
  straightness
  Antonym:
  indirectness
  

  source: wordnet30
• the quality of being honest and straightforward in attitude and speech(noun.attribute)

  Synonym:
  candidness, candor, candour, forthrightness, frankness
  

  source: wordnet30
• The quality of being direct; straightness; straightforwardness; immediateness.(noun)

  source: webster1913