phlegmatic (adj.)

• abeyant
• aloof
• apathetic
• benumbed
• blase
• bored
• calm
• careless
• cataleptic
• catatonic
• choleric
• cold
• comatose
• composed
• controlled
• cool
• cycloid
• cyclothymic
• dead
• debilitated
• detached
• disinterested
• distant
• dopey
• dormant
• droopy
• drugged
• dry
• dull
• enervated
• equanimous
• even-tempered
• exanimate
• extrovert
• flat
• foul
• groggy
• heartless
• heavy
• heedless
• hopeless
• impassive
• imperturbable
• inactive
• inanimate
• incurious
• indifferent
• indolent
• inert
• insensible
• insensitive
• insouciant
• jaded
• lackadaisical
• languid
• languorous
• latent
• leaden
• lethargic
• lifeless
• listless
• logy
• lumpish
• matter-of-fact
• melancholic
• mindless
• moderate
• moribund
• nonchalant
• numb
• numbed
• passive
• philosophical
• placid
• regardless
• restrained
• sanguine
• sated
• schizoid
• sedentary
• self-possessed
• serene
• slack
• sleeping
• sleepy
• slow
• sluggish
• smoldering
• somnolent
• soporific
• spiritless
• stagnant
• standing
• static
• stoic
• stoical
• stolid
• stupefied
• supine
• suspended
• tame
• temperate
• torpid
• tranquil
• unaffected
• unanimated
• uncaring
• unconcerned
• undemonstrative
• undisturbed
• unemotional
• unenthusiastic
• unfeeling
• uninquiring
• uninterested
• uninvolved
• unmindful
• unmoved
• unperturbed
• unresponsive
• unruffled
• vegetative
• wan
• weary
• withdrawn
• world-weary