incommunicative
uncommunicative
unemotional
Olympian
affectless
aloof
anesthetized
apathetic
arctic
at rest
autistic
backward
bashful
blank
blunt
bored
bovine
callous
calm
careless
catatonic
chill
chilled
chilly
cloistered
cold
cold as charity
cold-blooded
coldhearted
collected
composed
constrained
contained
controlled
cool
deadpan
detached
discreet
disinterested
dispassionate
distant
drugged
dry
dull
dwindling
ebbing
emotionally dead
emotionless
empty
even-tempered
even-tenored
expressionless
austere
bland
immovable
impenetrable
impersonal
imperturbable
indifferent
inscrutable
lifeless
placid
self-possessed
sober
stolid
unconcerned
unmoved
unreadable
unresponsive
Massive
massive
passive