bereft of feeling or sensation, e.g.:
having lost consciousness; unconscious
She was knocked insensible by the blow
lacking or deprived of sensory perception
He was struggling to open the lock with hands insensible from cold
lacking concern or awareness; indifferent
She was completely insensible to fear
incapable of being felt or sensed; imperceptible
an insensible change
insensibility /-ʹbiliti/ noun
insensibly adv
[Middle English via French from Latin insensibilis, from in-1 + sensibilis: see sensible]