noun (n)

• the state of being excluded(noun.state)

  Antonym:
  inclusion
  

  source: wordnet30
• the state of being excommunicated(noun.state)

  Synonym:
  censure, excommunication
  

  source: wordnet30
• a deliberate act of omission(noun.cognition)

  Synonym:
  elision, exception
  

  source: wordnet30
• the act of forcing out someone or something(noun.act)

  Synonym:
  ejection, expulsion, riddance
  

  source: wordnet30
• The act of excluding, or of shutting out, whether by thrusting out or by preventing admission; a debarring; rejection; prohibition; the state of being excluded.(noun)

  source: webster1913