軽薄才子
Meanings
1
shallow, glib, and obsequious person
A yojijukugo describing someone who is superficially clever and smooth-talking but lacks depth, often flattering others for personal gain.
He is a shallow, glib flatterer who always says nothing but flattery in front of his boss.
That politician is nothing more than a shallow, smooth-talking sycophant with no real policies.