어이라는단어가 영어로 뭐에요?
예를들어서..어이가 없어서~
그거와 (Because) I didn't know what to do는 비슷하죠?
대답해주시면 감사하겠습니다 ^^

Question

Answer

어이 (or 어처구니) = a grip of millstone.
어이 없다 (or 어처구니 없다) = You can use it when something or a situation doesn't make sense in common way. for example when something that is supposed to be is absent.
D: (similar emoticon)

Answer

"sense"요. 어이(어처구니) 없다 means something or someone has just left you dumbfounded because they're absurd or stupid, nonsense. Hope this helps. ^ ^