Source : Webster's Revised Unabridged Dictionary (1913)

Conciliate \Con*cil"i*ate\ (?; 106), v. t. [imp. & p. p.
   {Conciliated}; p. pr & vb. n. {Conciliating}.] [L.
   conciliatus, p. p. of conciliare to draw or bring together,
   unite, from concilium council. See {Council}.]
   To win ower; to gain from a state of hostility; to gain the
   good will or favor of; to make friendly; to mollify; to
   propitiate; to appease.

         The rapacity of his father's administration had excited
         such universal discontent, that it was found expedient
         to conciliate the nation.                --Hallam.

   Syn: To reconcile; propitiate; appease; pacify.

Source : WordNet®

conciliate
     v 1: cause to be more favorably inclined; gain the good will of;
          "She managed to mollify the angry customer" [syn: {pacify},
           {lenify}, {assuage}, {appease}, {mollify}, {placate}, {gentle},
           {gruntle}]
     2: come to terms; "After some discussion we finally made up"
        [syn: {reconcile}, {patch up}, {make up}, {settle}]
     3: make compatible with; "The scientists had to accommodate the
        new results with the existing theories" [syn: {accommodate},
         {reconcile}]