noun (n)

• close or warm friendship(noun.attribute)

  Example:
  The absence of fences created a mysterious intimacy in which no one knew privacy.
  

  Synonym:
  closeness, familiarity
  

  source: wordnet30
• a usually secretive or illicit sexual relationship(noun.state)

  Synonym:
  affair, affaire, amour, involvement, liaison
  

  source: wordnet30
• a feeling of being intimate and belonging together(noun.feeling)

  Synonym:
  closeness
  

  source: wordnet30
• The state of being intimate; close familiarity or association; nearness in friendship.(noun)

  source: webster1913