Source : Webster's Revised Unabridged Dictionary (1913)

Discredit \Dis*cred"it\, n. [Cf. F. discr['e]dit.]
   1. The act of discrediting or disbelieving, or the state of
      being discredited or disbelieved; as, later accounts have
      brought the story into discredit.

   2. Hence, some degree of dishonor or disesteem; ill repute;
      reproach; -- applied to persons or things.

            It is the duty of every Christian to be concerned
            for the reputation or discredit his life may bring
            on his profession.                    --Rogers.

   Syn: Disesteem; disrepute; dishonor; disgrace; ignominy;
        scandal; disbelief; distrust.

Discredit \Dis*cred"it\, v. t. [imp. & p. p. {Discredited}; p.
   pr. & vb. n. {Discrediting}.] [Cf. F. discr['e]diter.]
   1. To refuse credence to; not to accept as true; to
      disbelieve; as, the report is discredited.

   2. To deprive of credibility; to destroy confidence or trust
      in; to cause disbelief in the accuracy or authority of.

            An occasion might be given to the . . . papists of
            discrediting our common English Bible. --Strype.

   2. To deprive of credit or good repute; to bring reproach
      upon; to make less reputable; to disgrace.

            He. . . least discredits his travels who returns the
            same man he went.                     --Sir H.
                                                  Wotton.

Source : WordNet®

discredit
     n : the state of being held in low esteem; "your actions will
         bring discredit to your name"; "because of the scandal
         the school has fallen into disrepute" [syn: {disrepute}]
         [ant: {repute}]
     v 1: cause to be distrusted or disbelieved; "The paper
          discredited the politician with its nasty commentary"
     2: damage the reputation of; "This newspaper story discredits
        the politicians" [syn: {disgrace}]
     3: reject as false; refuse to accept [syn: {disbelieve}] [ant:
        {believe}]