This is the 5905th most frequent Korean word.
뻔뻔한
Brazen; shameless.
Here, '뻔뻔한' describes the audaciously shameless attitude of the subject.
그는 뻔뻔하게 거짓말을 했다.
He brazenly lied.
In this case, '뻔뻔한' qualifies the behavioral — specifically shameless or audacious — nature.
뻔뻔한 행동은 종종 사람들을 화나게 할 수 있습니다.
Brazen behavior can often anger people.
Here, '뻔뻔한' is attributed to a facial expression, demonstrating a lack of shame or respect.