Source : Webster's Revised Unabridged Dictionary (1913)

Candor \Can"dor\, n. [Written also {candour}.] [L. candor, fr.
   cand["e]re; cf. F. candeur. See {candid}.]
   1. Whiteness; brightness; (as applied to moral conditions)
      usullied purity; innocence. [Obs.]

            Nor yor unquestioned integrity Shall e'er be sullied
            with one taint or spot That may take from your
            innocence and candor.                 --Massinger.

   2. A disposition to treat subjects with fairness; freedom
      from prejudice or disguise; frankness; sincerity.

            Attribute superior sagacity and candor to those who
            held that side of the question.       --Whewell.

Source : WordNet®

candour
     n 1: the quality of being honest and straightforward in attitude
          and speech [syn: {candor}, {candidness}, {frankness}, {forthrightness}]
     2: ability to make judgments free from discrimination or
        dishonesty [syn: {fairness}, {fair-mindedness}, {candor}]
        [ant: {unfairness}]