cool
insusceptible
refractory
unsusceptible
affectless
anesthetized
arctic
autistic
blunt
callous
calloused
catatonic
chill
chilly
closed to
cold
cold as charity
cold of heart
cold-blooded
coldblooded
coldhearted
dispassionate
drugged
dull
emotionally dead
emotionless
flinthearted
frigid
frosted
frosty
frozen
hard
hard of heart
hardened
hardhearted
heartless
icy
immovable
impassible
impassive
impersuadable
impersuasible
impervious
inexcitable
inflexible
inhibited
insensitive
insentient
nonemotional
obdurate
objective
obstinate
aloof
apathetic
expressionless
flaccid
inanimate
inert
insensible
lifeless
limp
listless
numb
oblivious
spiritless
torpid
unable
uncaring
uninterested
unmanageable
unmoved
unmoving
unreadable
nonresponsive
responsive