noun (n)

• conformity with some esthetic standard of correctness or propriety(noun.attribute)

  Example:
  It was performed with justness and beauty.
  

  Synonym:
  nicety, rightness
  

  source: wordnet30
• the quality of being just or fair(noun.attribute)

  Synonym:
  justice
  Antonym:
  injustice, unjustness
  

  source: wordnet30
• The quality of being just; conformity to truth, propriety, accuracy, exactness, and the like; justice; reasonableness; fairness; equity; as, justness of proportions; the justness of a description or representation; the justness of a cause.(noun)

  source: webster1913