noun (n)

• the quickness of action or occurrence(noun.attribute)

  Example:
  The instancy of modern communication.
  

  Synonym:
  immediacy, immediateness, instantaneousness
  

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

  Example:
  He pressed his demand with considerable instancy.
  

  Synonym:
  imperativeness
  

  source: wordnet30
• Instance; urgency.(noun)

  source: webster1913