unresponsive to stimulation; "he lay insensible where he had fallen"; "drugged and senseless" incapable of physical sensation; "insensible to pain"; "insensible earth
[ (")in-'sen(t)-s&-b&l ] (adjective.) 14th century. Middle English, from Middle French & Latin; Middle French, from Latin insensibilis, from in- + sensibilis sensible.