insensible

adj

1. Unable to be perceived by the senses.

   “Two small and almost insensible pricks were found upon Cleopatra's arm.”

   “They fall away, / And languish with insensible decay.”

2. Incapable or deprived of physical sensation.

   ““[…] Captain Markam had been found lying half-insensible, gagged and bound, on the floor of the sitting-room, his hands and feet tightly pinioned, and a woollen comforter wound closely round his mouth and neck ; whilst Mrs. Markham's jewel-case, containing valuable jewellery and the secret plans of Port Arthur, had disappeared.[…]””

   “The Leicester Daily Mercury reflected on how these concerns were the result of changing ways of getting around: "It might sound a bit crazy or just a little revolting that at Christmas works parties, some should drink themselves into a near-insensible state... This was not serious when they used public transport, but today more men and women use their own cars."”

3. Unable to be understood; unintelligible.
4. Not sensible or reasonable; meaningless.

   “If it make the indictment be insensible or uncertain, […]it shall be quashed.”

5. Incapable of mental feeling; indifferent.

   “Lost in their loves, insensible of shame.”

   “In spite of her deep-rooted dislike, she could not be insensible to the compliment of such a man's affection[…]”

6. Incapable of emotional feeling; callous; apathetic.