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.
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.