언자부지in English:a person who is not aware of their own ignorance

Examples
with 언자부지.

• 그는 언자부지라서 자신이 모르는 것을 모른다.geuneun eonjabujiraseo jasini moreuneun geoseul moleunda.He is an eonjabujin, so he doesn't know what he doesn't know.