Source : Webster's Revised Unabridged Dictionary (1913)

Unhinge \Un*hinge"\, v. t. [1 st pref. un- + hinge.]
   1. To take from the hinges; as, to unhinge a door.

   2. To displace; to unfix by violence. --Blackmore.

   3. To render unstable or wavering; to unsettle; as, to
      unhinge one's mind or opinions; to unhinge the nerves.

            Why should I then unhinge my brains, ruin my mind?
                                                  --South.

            His sufferings, nay the revolutions of his fate, had
            not in the least unhinged his mind.   --Walpole.

Source : WordNet®

unhinge
     v 1: disturb in mind or make uneasy or cause to be worried or
          alarmed; "She was rather perturbed by the news that her
          father was seriously ill" [syn: {perturb}, {disquiet}, {trouble},
           {cark}, {distract}, {disorder}]
     2: remove the hinges from; "unhinge the door"