/ ɪnˈsensəbl; NAmE / adjective ( formal )
1.
[ not before noun ] insensible (to sth) unable to feel sth or react to it :
insensible to pain / cold
2.
[ not before noun ] insensible (of sth) not aware of a situation or of sth that might happen
SYN unaware :
They were not insensible of the risks.
OPP sensible
3.
unconscious as the result of injury, illness, etc. :
He drank himself insensible.
► in·sens·ibly / -əbli; NAmE / adverb
••
WORD ORIGIN
late Middle English (also in the senses unable to be perceived and incapable of physical sensation ): partly from Old French insensible (from Latin insensibilis , from in- not + sensibilis , from sensus sense), partly from in- not + sensible .