If something is someone's undoing, it is the cause of their failure.
例句
His lack of experience may prove to be his undoing...他缺乏经验可能会最终导致他的失败。Issues of national defense have been the undoing of Democratic candidates.国防问题导致了民主党候选人的失利。
英汉词典释义
n.
解开;打开
She has invented a nifty little gadget for undoing stubborn nuts and bolts.她发明了一种灵巧的小工具用来松开紧固的螺母和螺栓。
毁灭或失败的原因
The new president spent the first year undoing the work of his predecessor.新总统用了第一年的时间来收拾前任总统留下的摊子。
毁灭;垮台
This hard attitude may have led to his undoing.可能就是这种强硬的态度导致了他的垮台。
英英词典释义
Noun
1. an act that makes a previous act of no effect (as if not done)
2. loosening the ties that fasten something;
"the tying of bow ties is an art; the untying is easy"