Source : Webster's Revised Unabridged Dictionary (1913)

Discomfit \Dis*com"fit\, v. t. [imp. & p. p. {Discomfited}; p.
   pr. & vb. n. {Discomfiting}.] [OF. desconfit, p. p. of
   desconfire, F. d['e]confire; fr. L. dis- + conficere to make
   ready, prepare, bring about. See {Comfit}, {Fact}.]
   1. To scatter in fight; to put to rout; to defeat.

            And his proud foes discomfit in victorious field.
                                                  --Spenser.

   2. To break up and frustrate the plans of; to balk? to throw
      into perplexity and dejection; to disconcert.

            Well, go with me and be not so discomfited. --Shak.

   Syn: To defeat; overthrow; overpower; vanquish; conquer;
        baffle; frustrate; confound; discourage.

Source : WordNet®

discomfited
     adj 1: disappointingly unsuccessful; "disappointed expectations and
            thwarted ambitions"; "their foiled attempt to capture
            Calais"; "many frustrated poets end as pipe-smoking
            teachers"; "his best efforts were thwarted" [syn: {defeated},
             {disappointed}, {foiled}, {frustrated}, {thwarted}]
     2: caused to feel self-conscious and uncomfortable; "was
        discomfited by the personal questions"; "the child felt
        embarrassed by the attention of the adults" [syn: {embarrassed}]
     n : people who are defeated; "the Romans had no pity for the
         defeated" [syn: {defeated}]