Synonyms and related words :
Olympian, above all that, aloof, backward, bashful, blank, chilled, chilly, cold, constrained, cool, detached, discreet, distant, eremitic, exclusive, expressionless, forbidding, frigid, frosty, guarded, haughty, highfalutin, icy, impassive, impersonal, inaccessible, insociable, introverted, lordly, misanthropic, modest, offish, pompous, reclusive, remote, removed, repressed, reserved, restrained, reticent, retiring, seclusive, shrinking, snooty, solitary, standoff, subdued, suppressed, unaffable, unapproachable, uncompanionable, uncongenial, undemonstrative, unexpansive, unfriendly, ungenial, unsociable, unsocial, withdrawn