Source : Webster's Revised Unabridged Dictionary (1913)

Contradict \Con`tra*dict"\, v. t. [imp. & p. p. {Contradicted};
   p. pr. & vb. n. {Contradicting}.] [L. contradictus, p. p. of
   contradicere to speak against; contra + dicere to speak. See
   {Diction}.]
   1. To assert the contrary of; to oppose in words; to take
      issue with; to gainsay; to deny the truth of, as of a
      statement or a speaker; to impugn.

            Dear Duff, I prithee, contradict thyself, And say it
            is not so.                            --Shak.

            The future can not contradict the past.
                                                  --Wordsworth.

   2. To be contrary to; to oppose; to resist. [Obs.]

            No truth can contradict another truth. --Hooker.

            A greater power than we can contradict Hath thwarted
            our intents.                          --Shak.