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a·loof [uh-loof]
–adverb
1. at a distance, esp. in feeling or interest; apart: They always stood aloof from their classmates.
–adjective
2. reserved or reticent; indifferent; disinterested: Because of his shyness, he had the reputation of being aloof.
[Origin: 1525–35; a-1 + loof luff windward]

—Related forms
a·loof·ly, adverb
a·loof·ness, noun

—Synonyms 2. cool, detached; distant, standoffish; snobbish, haughty, disdainful.
—Antonyms 1. near. 2. warm, open, gregarious, outgoing.

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.