aloofness
Concise Oxford English Dictionary © 2008 Oxford University Press:
aloof/əˈluːf/
▶adjective not friendly; cool and distant.
– derivatives
aloofly adverb,
aloofness noun.
aloofly adverb,
aloofness noun.
– origin C16: from a-2 + luff, orig. in naut. use meaning ‘away and to windward!’, i.e. with the ship's head kept close to the wind away from a lee shore or other hazard.
'aloofness' also found in these Oxford entries:

