Source : Webster's Revised Unabridged Dictionary (1913)

Ingratiate \In*gra"ti*ate\, v. t. [imp. & p. p. {Ingratiated};
   p. pr. & vb. n. {Ingratiating}.] [Pref. in- in + L. gratia.
   See {Grace}.]
   1. To introduce or commend to the favor of another; to bring
      into favor; to insinuate; -- used reflexively, and
      followed by with before the person whose favor is sought.

            Lysimachus . . . ingratiated himself both with
            Philip and his pupil.                 --Budgell.

   2. To recommend; to render easy or agreeable; -- followed by
      to. [Obs.] --Dr. J. Scott.

            What difficulty would it [the love of Christ] not
            ingratiate to us?                     --Hammond.

Source : WordNet®

ingratiating
     adj 1: capable of winning favor; "with open arms and an
            ingratiating smile"
     2: calculated to please or gain favor; "a smooth ingratiating
        manner" [syn: {ingratiatory}]