apathetic (adj.)
- abeyant
- aloof
- anesthetic
- ataractic
- backward
- balking
- balky
- benumbed
- blase
- bleak
- bored
- callous
- careless
- casual
- cataleptic
- catatonic
- centrist
- cheerless
- comatose
- comfortless
- dead
- debilitated
- despairing
- desperate
- despondent
- detached
- devil-may-care
- dilatory
- disconsolate
- disinterested
- dismal
- dispassionate
- distant
- dopey
- dormant
- droopy
- drugged
- dry
- dull
- easygoing
- enervated
- even
- exanimate
- fifty-fifty
- flat
- forlorn
- foul
- grim
- groggy
- grudging
- half-and-half
- heartless
- heavy
- heedless
- hopeless
- impartial
- impassive
- inactive
- inanimate
- inattentive
- incurious
- independent
- indifferent
- inert
- insensible
- insensitive
- insouciant
- jaded
- lackadaisical
- laggard
- languid
- languorous
- latent
- leaden
- lethargic
- lifeless
- limp
- listless
- loath
- logy
- lumpish
- matter-of-fact
- midway
- mindless
- moderate
- moribund
- negligent
- neuter
- neutral
- nonaligned
- nonchalant
- nonpartisan
- numb
- numbed
- passive
- perfunctory
- phlegmatic
- reckless
- regardless
- reluctant
- restive
- sated
- sedentary
- slack
- sleeping
- sleepy
- slow
- sluggish
- smoldering
- somnolent
- soporific
- spiritless
- stagnant
- standing
- static
- stoic
- stolid
- stupefied
- supine
- suspended
- tame
- torpid
- uncaring
- uncommitted
- unconcerned
- undiscriminating
- unenthusiastic
- unhopeful
- uninquiring
- uninterested
- uninvolved
- unmindful
- unmoved
- untouched
- vegetative
- wan
- weary
- withdrawn
- world-weary