tr.v. in·gra·ti·at·ed, in·gra·ti·at·ing, in·gra·ti·ates
To bring (oneself, for example) into the favor or good graces of another, especially by deliberate effort: She quickly sought to ingratiate herself with the new administration.
[Perhaps from Italian ingraziare, from in grazia, into favor, from Latin in grātiam : in, in; see IN-2 + grātiam, accusative of grātia, favor (from grātus, pleasing; see gwerə-2 in the Appendix of Indo-European roots).]
in·grati·a·to′ry (-shē-ə-tôr′ē) adj.
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Indo-European & Semitic Roots Appendices
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