무력감이 · 무력감을
helplessness, powerlessness
Example
아무것도 할 수 없다는 무력감에 빠졌어요.
I sank into a sense of helplessness, feeling I couldn't do anything.
Word parts
무 without+력 power+감 feeling
Literally 'feeling of having no power'.
Good to know
Pronounced [무력깜]; often with 빠지다 or 느끼다.