insensibility

 
Pronunciation: /ɪnˌsɛnsɪˈbɪlɪti/

noun

  • 1 [mass noun] unconsciousness: I flogged him into insensibility
  • inability to be moved emotionally: Lady Grafton’s insensibility bordered on cruelty
  • 2lack of awareness or concern; indifference: your insensibility to the extreme importance of the mission we are on

Origin:

late Middle English: partly from Old French insensibilite or late Latin insensibilitas (from in- 'not' + Latin sensibilis 'sensible', from sensus 'sense'), partly from in-1 'without' + sensibility