Source : Webster's Revised Unabridged Dictionary (1913)

Confirm \Con*firm"\, v. t. [imp. & p. p. {Confrmed}; p. pr. &
   vb. n. {Confirming}.] [OE. confermen, confirmen, OF.
   confermer, F. confirmer, fr. L. confirmare; con- + firmare to
   make firm, fr. firmus firm. See {Firm}.]
   1. To make firm or firmer; to add strength to; to establish;
      as, health is confirmed by exercise.

            Confirm the crown to me and to mine heirs. --Shak.

            And confirmed the same unto Jacob for a law. --Ps.
                                                  cv. 10.

   2. To strengthen in judgment or purpose.

            Confirmed, then, I resolve Adam shall share with me
            in bliss or woe.                      --Milton.

   3. To give new assurance of the truth of; to render certain;
      to verify; to corroborate; as, to confirm a rumor.

            Your eyes shall witness and confirm my tale. --Pope.

            These likelihoods confirm her flight. --Shak.

   4. To render valid by formal assent; to complete by a
      necessary sanction; to ratify; as, to confirm the
      appoinment of an official; the Senate confirms a treaty.

            That treaty so prejudicial ought to have been
            remitted rather than confimed.        --Swift.

   5. (Eccl.) To administer the rite of confirmation to. See
      {Confirmation}, 3.

            Those which are thus confirmed are thereby supposed
            to be fit for admission to the sacrament. --Hammond.

   Syn: To strengthen; corroborate; substantiate; establish;
        fix; ratify; settle; verify; assure.