dis·o·ri·ent

[dis-awr-ee-ent, -ohr-]
verb (used with object)
1.
to cause to lose one's way: The strange streets disoriented him.
2.
to confuse by removing or obscuring something that has guided a person, group, or culture, as customs, moral standards, etc.: Society has been disoriented by changing values.
3.
Psychiatry. to cause to lose perception of time, place, or one's personal identity.

Origin:
1645–55; < French désorienter, equivalent to dés- dis-1 + orienter to orient

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
disorientate or disorient (dɪsˈɔːrɪənˌteɪt) [Click for IPA pronunciation guide]
 
vb
1.  to cause (someone) to lose his bearings
2.  to perplex; confuse
 
disorient or disorient
 
vb
 
disorien'tation or disorient
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Disorient is one of our favorite verbs.
So is peculate. Does it mean:
to spend time idly; loaf.
to steal or take dishonestly (money, esp. public funds, or property entrusted to one's care); embezzle.
Etymonline
Word Origin & History

disorient
1650s, from Fr. désorienter, from dés- "dis-" (see dis-) + orienter (see orient (v.)). Related: Disoriented; disorienting.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Darkness and debris add to the hazards and can disorient visitors, leaving them
  lost underground.
Brightly lit cities can disorient the hatchlings causing them to head toward
  developed areas.
One has to trust him, even while realizing that one of his methods of operation
  is to disorient us as thoroughly as possible.
These birds, particularly fledglings, are also attracted to bright lights that
  disorient them.
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