Definition of Ingratiate: Ingratiate (verb): To bring oneself into favor with someone by trying to please them or using flattery. Synonyms: flatter, charm, cultivate, brown-nose Antonyms: alienate, offend, repel, estrange Memory Tip: Think of “ingratiate” as someone trying to “gratify” another person by doing things they like or using excessive flattery, to win their approval.…