a [an empty] compliment; flattery
flatter [compliment] a person ((on, about))／pay a compliment to a person
flattering ((a person)) in an insincere manner; ((英口)) smarmy
He tried to flatter Jane by saying that she had a lovely voice.
I know you are only flattering me, but I'm glad.
frankly speaking／to be plain with you
an unctuous person
a blunt person
offer a person an insincere compliment
You are so diplomatic [good at compliments].／You know how to please people.
You are just saying so to be nice [kind].
「Even to be courteous [With the best will in the world], I can't say he's good at it.
御世辞笑い｜an ingratiating smile