impersonal (adj.)

• abstract
• aloof
• backward
• bashful
• blank
• candid
• chilly
• cold
• cold-blooded
• colorless
• constrained
• conventionalized
• cool
• detached
• discreet
• disinterested
• dispassionate
• distant
• emotionless
• equal
• equitable
• evenhanded
• expressionless
• external
• extraneous
• extrinsic
• fair
• forbidding
• foreign
• formal
• formalistic
• formulary
• frigid
• frosty
• guarded
• icy
• impartial
• impassive
• inaccessible
• indifferent
• introverted
• just
• lofty
• matter-of-fact
• mechanical
• modest
• neutral
• nominal
• nonsubjective
• objective
• offish
• outlying
• outside
• outward
• pedantic
• poker-faced
• prim
• remote
• removed
• repressed
• reserved
• restrained
• reticent
• retiring
• rigid
• selfless
• shrinking
• standoffish
• stiff
• strait-laced
• stuffy
• stylized
• subdued
• superficial
• suppressed
• surface
• unapproachable
• unbiased
• uncolored
• uncongenial
• undemonstrative
• unexpansive
• unfriendly
• unimpassioned
• uninfluenced
• unprejudiced
• unselfish
• unswayed
• withdrawn
• wooden