The Collaborative International Dictionary of English v.0.48:

Ingratiate \In*gra"ti*ate\, v. i.
   To gain favor. [R.] --Sir W. Temple.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ingratiate \In*gra"ti*ate\, v. t. [imp. & p. p. Ingratiated;
   p. pr. & vb. n. Ingratiating.] [Pref. in- in + L. gratia.
   See Grace.]
   [1913 Webster]
   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.
      [1913 Webster]

            Lysimachus . . . ingratiated himself both with
            Philip and his pupil.                 --Budgell.
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   2. To recommend; to render easy or agreeable; -- followed by
      to. [Obs.] --Dr. J. Scott.
      [1913 Webster]

            What difficulty would it [the love of Christ] not
            ingratiate to us?                     --Hammond.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ingratiate
    v 1: gain favor with somebody by deliberate efforts