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; < Frenchdésorienter, equivalent to dés-dis-1 + orienter to orient