Olympian, aloof, backward, bashful, blank, calculating, canny, careful, cautious, chary, chilled, chilly, circumspect, close, closemouthed, cold, considerate, constrained, controlled, cool, dark, deliberate, detached, diplomatic, discriminating, discriminative, distant, dry, enlightened, evasive, expressionless, forbidding, frigid, frosty, gingerly, guarded, heedful, hesitant, icy, impassive, impersonal, inaccessible, introverted, judgmatic, judicial, judicious, leaving out nothing, mindful, moderate, modest, noncommittal, offish, on guard, overlooking no possibility, pawky, politic, provident, prudent, prudential, reasonable, reflecting, reflective, regardful, remote, removed, repressed, reserved, restrained, reticent, retiring, safe, secret, secretive, shifty, shrinking, simple, slow to act, standoff, standoffish, subdued, suppressed, tactful, temperate, tentative, thorough, thoughtful, unadorned, unadventurous, unaffable, unapproachable, uncommunicative, uncongenial, undaring, undemonstrative, unelaborate, unenterprising, unexcessive, unexpansive, unextreme, ungenial, unostentatious, unprecipitate, unpretentious, wary, watchful, well-advised, well-judged, withdrawn