affectless
anesthetized
apathetic
arctic
arid
ataractic
autistic
aweless
barren
blah
blank
blase
bloodless
blunt
bovine
calm
careless
casual
catatonic
characterless
chill
chilly
cold
cold as charity
cold-blooded
coldhearted
colorless
composed
cool
coolheaded
dead
devil-may-care
disinterested
dismal
dispassionate
disregardful
draggy
drearisome
dreary
drugged
dry
dryasdust
dull
dusty
easygoing
effete
elephantine
emotionally dead
emotionless