Source : Webster's Revised Unabridged Dictionary (1913)

Opinion \O*pin"ion\, n. [F., from L. opinio. See {Opine}.]
   1. That which is opined; a notion or conviction founded on
      probable evidence; belief stronger than impression, less
      strong than positive knowledge; settled judgment in regard
      to any point of knowledge or action.

            Opinion is when the assent of the understanding is
            so far gained by evidence of probability, that it
            rather inclines to one persussion than to another,
            yet not without a mixture of incertainty or
            doubting.                             --Sir M. Hale.

            I can not put off my opinion so easily. --Shak.

   2. The judgment or sentiment which the mind forms of persons
      or things; estimation.

            I have bought golden opinions from all sorts of
            people.                               --Shak.

            Friendship . . . gives a man a peculiar right and
            claim to the good opinion of his friend. --South.

            However, I have no opinion of those things. --Bacon.

   3. Favorable estimation; hence, consideration; reputation;
      fame; public sentiment or esteem. [Obs.]

            Thou hast redeemed thy lost opinion.  --Shak.

            This gained Agricola much opinion, who . . . had
            made such early progress into laborious . . .
            enterprises.                          --Milton.

   4. Obstinacy in holding to one's belief or impression;
      opiniativeness; conceitedness. [Obs.] --Shak.

   5. (Law.) The formal decision, or expression of views, of a
      judge, an umpire, a counselor, or other party officially
      called upon to consider and decide upon a matter or point
      submitted.

   {To be of opinion}, to think; to judge.

   {To hold opinion with}, to agree with. [Obs.] --Shak.

   Syn: Sentiment; notion; persuasion; idea; view; estimation.
        See {Sentiment}.