undomestic

adj. 非家庭的, 非国内的

例句与用法：

That proved to be my undoing, for I soon got back to my old bad habit of dozing off in front of the screen.

这证明了我的失败，因为我不久就回到电视屏幕前打瞌睡的坏习惯去了。

Greed was his undoing.

贪婪就是坠落

Stress can be the undoing of so many fine players.

紧张可能是这许多优秀选手失败的原因。