aloof • apathetic • backward • benumbed • blah • blank • blase • blunt • careless • catatonic • chill • chilly • cold • cold-blooded • comatose • cool • detached • disinterested • dispassionate • distant • drugged • dull • emotionless • frigid • frosty • heartless • hebetudinous • heedless • icy • impassive • impersonal • incurious • indifferent • inexcitable • insouciant • languid • Laodicean • lethargic • listless • mindless • modest • neutral • nonchalant • numb • numbed • objective • obtuse • Olympian • passive • perfunctory • phlegmatic • regardless • remote • removed • repressed • reserved • restrained • slack • sluggish • spiritless • standoffish • Stoic • stolid • subdued • supine • torpid • unapproachable • uncaring • unconcerned • undemonstrative • unemotional • unfeeling • ungenial • unimpassioned • uninterested • uninvolved • unmindful • unresponsive • unsympathetic • withdrawn