Synonyms for Ingratiatory (same or very similar meaning)
WordNet sense 1 (pleasingly persuasive or intended to persuade):
coaxing
WordNet sense 2 (tending or intended or having the power to induce action or belief):
persuasive
WordNet sense 3 (calculated to please or gain favor):
ingratiating, insinuating
WordNet sense 4 (showing or representing to advantage):
flattering
From the ODE community, based on WordNet
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