abiotic, asleep, azoic, benumbed, callous, dead, deadened, dull, dumb, exanimate, impassible, impassive, imperceptive, impercipient, inanimate, inanimated, inert, insensate, insensible, insensitive, lifeless, mute, nonconscious, nonliving, numb, numbed, obdurate, obtuse, senseless, soulless, thick-skinned, thick-witted, unanimated, unconscious, unfeeling, unfelt, unimpressible, unimpressionable, unperceptive, unresponsive, unsusceptible