The Collaborative International Dictionary of English v.0.48:

Dishonest \Dis*hon"est\, v. t. [Cf. OF. deshonester.]
   To disgrace; to dishonor; as, to dishonest a maid. [Obs.]
   [1913 Webster]

         I will no longer dishonest my house.     --Chapman.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dishonest \Dis*hon"est\, a. [Pref. dis- + honest: cf. F.
   d['e]shonn[^e]te, OF. deshoneste.]
   1. Dishonorable; shameful; indecent; unchaste; lewd. [Obs.]
      [1913 Webster]

            Inglorious triumphs and dishonest scars. --Pope.
      [1913 Webster]

            Speak no foul or dishonest words before them [the
            women].                               --Sir T.
                                                  North.
      [1913 Webster]

   2. Dishonored; disgraced; disfigured. [Obs.]
      [1913 Webster]

            Dishonest with lopped arms the youth appears,
            Spoiled of his nose and shortened of his ears.
                                                  --Dryden.
      [1913 Webster]

   3. Wanting in honesty; void of integrity; faithless; disposed
      to cheat or defraud; not trustworthy; as, a dishonest man.
      [1913 Webster]

   4. Characterized by fraud; indicating a want of probity;
      knavish; fraudulent; unjust.
      [1913 Webster]

            To get dishonest gain.                --Ezek. xxii.
                                                  27.
      [1913 Webster]

            The dishonest profits of men in office. --Bancroft.
      [1913 Webster]

WordNet (r) 3.0 (2006):

dishonest
    adj 1: deceptive or fraudulent; disposed to cheat or defraud or
           deceive [syn: dishonest, dishonorable] [ant:
           honest, honorable]
    2: capable of being corrupted; "corruptible judges"; "dishonest
       politicians"; "a purchasable senator"; "a venal police
       officer" [syn: corruptible, bribable, dishonest,
       purchasable, venal]