adv. 1 apart, away, at a distance, separate; at arm's length We invited Martha to join us but she preferred to remain aloof
adj. 2 private, reticent, reserved, withdrawn, haughty, supercilious, standoffish, formal, unsociable, unsocial; distant, remote Deirdre is quite an aloof sort of person - not what you would call a 'mixer' 3 standoffish, distant, remote, cool, chilly, unresponsive, unfriendly, antisocial, unapproachable; unsympathetic, apathetic, indifferent, undemonstrative Roger keeps himself aloof from the needs of those less fortunate than he is