noun (n)

• the act of discontinuing or breaking off; an interruption (temporary or permanent)(noun.act)

  Synonym:
  discontinuation
  Antonym:
  continuance, continuation
  

  source: wordnet30
• The act of discontinuing, or the state of being discontinued; want of continued connection or continuity; breaking off; cessation; interruption; as, a discontinuance of conversation or intercourse; discontinuance of a highway or of travel.(noun)

  source: webster1913