Source : Webster's Revised Unabridged Dictionary (1913)

Probable \Prob"a*ble\, a. [L. probabilis, fr. probare to try,
   approve, prove: cf. F. probable. See {Prove}, and cf.
   {Provable}.]
   1. Capable of being proved. [Obs.]

   2. Having more evidence for than against; supported by
      evidence which inclines the mind to believe, but leaves
      some room for doubt; likely.

            That is accounted probable which has better
            arguments producible for it than can be brought
            against it.                           --South.

            I do not say that the principles of religion are
            merely probable; I have before asserted them to be
            morally certain.                      --Bp. Wilkins.

Source : WordNet®

probable
     adj 1: likely but not certain to be or become true or real; "a
            likely result"; "he foresaw a probable loss" [syn: {likely},
             {plausible}] [ant: {improbable}]
     2: apparently destined; "the probable consequences of going
        ahead with the scheme"

probable
     n : an applicant likely to be chosen