Source : Webster's Revised Unabridged Dictionary (1913)

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

            Inglorious triumphs and dishonest scars. --Pope.

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

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

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

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

   4. Characterized by fraud; indicating a want of probity;
      knavish; fraudulent; unjust.

            To get dishonest gain.                --Ezek. xxii.
                                                  27.

            The dishonest profits of men in office. --Bancroft.

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

         I will no longer dishonest my house.     --Chapman.

Source : WordNet®

dishonest
     adj 1: deceptive or fraudulent; disposed to cheat or defraud or
            deceive [syn: {dishonorable}] [ant: {honest}]
     2: lacking honesty and oblivious to what is honorable [syn: {unscrupulous}]
     3: lacking truthfulness; "a dishonest answer"
     4: capable of being corrupted; "corruptible judges"; "dishonest
        politicians"; "a purchasable senator"; "a venal police
        officer" [syn: {corruptible}, {bribable}, {purchasable}, {venal}]