anesthetic
anæsthetic
asleep
benumbed
imperceptible
insensitive
numb
unconscious
unperceivable
a stranger to
abiotic
absorbed
anesthetized
apathetic
azoic
behind the curtain
behind the scenes
blind
blind to
blindfold
blindfolded
bloodless
blunt
callous
camouflaged
caught napping
cold
comatose
concealed
cool
dead
dead to
deadened
deaf
deaf to
dim-sighted
disguised
dispassionate
dull
dumb
emotionless
engrossed
exanimate
gradual
hard
hardened
hidden
impalpable
impassible
impassive
imperceivable
averse
expressionless
forgetful
impervious
impracticable
inaccessible
indifferent
inert
lifeless
oblivious
senseless
speechless
unable
unconcerned
unmindful
unmoved
unresponsive
unwilling
valueless
compensable
comprehensible
defensible
dispensable
indefensible
indispensable
ostensible
reprehensible
sensible