The Collaborative International Dictionary of English v.0.48:

Dishevel \Di*shev"el\ (d[i^]*sh[e^]v"'l or -[e^]l), v. t. [imp.
   & p. p. Disheveledor Dishevelled; p. pr. & vb. n.
   Disheveling or Dishevelling.] [OF. descheveler, F.
   d['e]cheveler, LL. discapillare; dis- + L. capillus the hair
   of the head. See Capillary.]
   1. To suffer (the hair) to hang loosely or disorderly; to
      spread or throw (the hair) in disorder; -- used chiefly in
      the passive participle.
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            With garments rent and hair disheveled,
            Wringing her hands and making piteous moan.
                                                  --Spenser.
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   2. To spread loosely or disorderly.
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            Like the fair flower disheveled in the wind.
                                                  --Cowper.
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