Source : Webster's Revised Unabridged Dictionary (1913)

Discompose \Dis`com*pose"\, v. t. [imp. & p. p. {Discomposed};
   p. pr. & vb. n. {Discomposing}.] [Pref. dis- + compose: cf.
   OF. decomposer, F. d['e]composer.]
   1. To disarrange; to interfere with; to disturb; to disorder;
      to unsettle; to break up.

            Or discomposed the headdress of a prude. --Pope.

   2. To throw into disorder; to ruffle; to destroy the
      composure or equanimity; to agitate.

            Opposition . . . discomposeth the mind's serenity.
                                                  --Glanvill.

   3. To put out of place or service; to discharge; to displace.
      [Obs.] --Bacon.

   Syn: To disorder; derange; unsettle; disturb; disconcert;
        agitate; ruffle; fret; vex.

Source : WordNet®

discompose
     v : cause to lose one's composure [syn: {upset}, {untune}, {disconcert},
          {discomfit}]