insensible (
http://definr.com/insensible)
adj 1: incapable of physical sensation; "insensible to pain";
"insensible earth" [ant:
sensible]
2: (followed by `to' or `by') unaware of or indifferent to;
"insensible to the suffering around him" [syn:
insensible(p),
unaffected(p)]
3: barely able to be perceived; "the transition was almost
indiscernible"; "an almost insensible change" [syn:
indiscernible,
undetectable]
4: unresponsive to stimulation; "he lay insensible where he had
fallen"; "drugged and senseless" [syn:
senseless]