noun (n)

• the quality of being unclear or abstruse and hard to understand(noun.attribute)

  Synonym:
  abstruseness, obscureness, reconditeness
  Antonym:
  clarity, clearness, limpidity, lucidity, lucidness, pellucidity
  

  source: wordnet30
• an obscure and unimportant standing; not well known(noun.state)

  Example:
  He worked in obscurity for many years.
  

  Antonym:
  prominence
  

  source: wordnet30
• the state of being indistinct or indefinite for lack of adequate illumination(noun.state)

  Synonym:
  obscureness
  

  source: wordnet30
• The quality or state of being obscure; darkness; privacy; inconspicuousness; unintelligibleness; uncertainty.(noun)

  source: webster1913