Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ingratiatory is an adjective meaning "pleasingly persuasive or intended to persuade". It carries 2 recorded senses.
pleasingly persuasive or intended to persuade
“a coaxing and obsequious voice”
“her manner is quiet and ingratiatory and a little too agreeable”
calculated to please or gain favor
“a smooth ingratiating manner”
Definitions, synonyms and semantic relations for ingratiatory come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.