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.

Ingratiate \In*gra"ti*ate\, v. i.
   To gain favor. [R.] --Sir W. Temple.

Source : WordNet®

ingratiate
     v : gain favor with somebody by deliberate efforts