dispassionate (adj.)

• aboveboard
• abstract
• aloof
• apathetic
• arctic
• ataractic
• autistic
• blase
• blunt
• bovine
• calm
• candid
• careless
• casual
• catatonic
• chilly
• cold
• cold-blooded
• coldhearted
• colorless
• composed
• cool
• detached
• devil-may-care
• disinterested
• drugged
• dull
• easygoing
• emotionless
• equable
• equal
• equitable
• even
• even-tempered
• evenhanded
• fair
• frank
• frigid
• frosted
• frosty
• frozen
• heartless
• heedless
• icy
• immovable
• impartial
• impassive
• impersonal
• imperturbable
• inattentive
• incurious
• indifferent
• insouciant
• insusceptible
• just
• lackadaisical
• level-headed
• levelheaded
• listless
• lofty
• mindless
• negligent
• neutral
• nonchalant
• objective
• obtuse
• open
• open-minded
• passionless
• patient
• peaceful
• perfunctory
• placid
• poker-faced
• reckless
• regardless
• reposeful
• self-absorbed
• self-possessed
• selfless
• serene
• sober
• soulless
• spiritless
• steady
• stoic
• stolid
• straightforward
• tranquil
• unaffectionate
• unbiased
• uncolored
• unconcerned
• undiscriminating
• unemotional
• unexcitable
• unexcited
• unfeeling
• unflappable
• unimpassioned
• unimpressionable
• uninfluenced
• uninterested
• unloving
• unmindful
• unmoved
• unprejudiced
• unresponsive
• unruffled
• unselfish
• unsusceptible
• unswayed
• unsympathetic
• untouchable