Insentient /(?)/

In·sen·ti·ent

Insentient

a.
  1. Not sentient; not having perception, or the power of perception; devoid of feeling, consciousness and animation; inanimate; as, insentient stone. Opposite of sentient.
    The . . . attributes of an insentient, inert substance.
    — Reid.
    But there can be nothing like to this sensation in the rose, because it is insentient.
  2. incapable of sensation.