insensible -
incapable of physical sensation; "insensible to pain"; "insensible earth"
sensible,
sensitive aware intuitively or intellectually of something sensed; "made sensible of his mistakes"; "I am sensible that the mention of such a circumstance may appear trifling"- Henry Hallam; "sensible that a good deal more is still to be done"- Edmund Burke
insensitive not responsive to physical stimuli; "insensitive to radiation"
insensitive not responsive to physical stimuli; "insensitive to radiation"
incognizant,
unaware (often followed by `of') not aware; "seemed unaware of the scrutiny"; "unaware of the danger they were in"; "unaware of the newborn hope"; "the most unaware person I've known"
unconscious (followed by `of') not knowing or perceiving; "happily unconscious of the new calamity at home"- Charles Dickens
