unfeeling
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
unfelt
unimpressible
unimpressionable
unperceptive
unresponsive
unsusceptible
aimable
blanket-wrapped
cotangent
justify
neurovascular
night-black
non-humanoid
nonsentient
percipient
samsaric
semisentient
sleep-heavy
strengthless
three-score
unreceptive