Source : Webster's Revised Unabridged Dictionary (1913)

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.