noun (n)

• a feeling of faintness and of being ready to swoon(noun.feeling)

  source: wordnet30
• the property of being without strength(noun.attribute)

  Example:
  The faintness or potency of the feeling.
  

  source: wordnet30
• barely audible(noun.attribute)

  source: wordnet30
• the trait of lacking boldness and courage(noun.attribute)

  Example:
  Faintness of heart and infirmity of purpose.
  

  Synonym:
  faintheartedness
  Antonym:
  stoutheartedness
  

  source: wordnet30
• the quality of being dim or lacking contrast(noun.attribute)

  Synonym:
  dimness
  

  source: wordnet30
• The state of being faint; loss of strength, or of consciousness, and self-control.(noun)

  source: webster1913