English to English

noun (n)

• a lack of sensibility(noun.cognition)

  Antonym:
  aesthesia, esthesia, sensibility
  

  source: wordnet30
• devoid of passion or feeling; hardheartedness(noun.attribute)

  Synonym:
  callosity, callousness, hardness, unfeelingness
  

  source: wordnet30
• The state or quality of being insensible; want of sensibility; torpor; unconsciousness; as, the insensibility produced by a fall, or by opiates.(noun)

  source: webster1913