筋疲力盡;智窮力竭;山窮水盡
牛津電影裡 100%
to feel that you cannot deal with a difficult situation any more because you are too tired, worried, etc.
He is out of control, and I am at the end of my rope.
I'm at the end of my rope.
釋義來自《牛津高階英漢雙解詞典》第 9 版