noun (n)

• mental responsiveness and awareness(noun.cognition)

  Synonym:
  aesthesia, esthesia
  Antonym:
  insensibility
  

  source: wordnet30
• refined sensitivity to pleasurable or painful impressions(noun.feeling)

  Example:
  Cruelty offended his sensibility.
  

  source: wordnet30
• (physiology) responsiveness to external stimuli; the faculty of sensation(noun.cognition)

  Synonym:
  sensitiveness, sensitivity
  

  source: wordnet30
• The quality or state of being sensible, or capable of sensation; capacity to feel or perceive.(noun)

  source: webster1913