눈감아 주다

To knowingly overlook someone’s mistake or wrongdoing without pointing it out or punishing them

시치미를 떼다

To pretend not to know about something you clearly did; to feign innocence

낯이 두껍다

To be shameless or brazen, acting without embarrassment even in awkward or inappropriate situations

염치가 없다

To lack a sense of shame or decency; not knowing what’s proper or respectful in a situation