Ingrate (adjective)
Ungrateful.
Ingrate (adjective)
Unpleasant, unfriendly. 18th c.
Ingrate (noun)
An ungrateful person.
Ingratiate (verb)
To bring oneself into favour with someone by flattering or trying to please him or her.
Ingratiate (verb)
}} To recommend; to render easy or agreeable.
Wiktionary
Ingratiate (verb)
bring oneself into favour with someone by flattering or trying to please them
“a sycophantic attempt to ingratiate herself with the local aristocracy”
Oxford Dictionary