窮 Kanji
万事休窮 Kanji
今頃彼は万事休すだ。 It is all up with him by this time.
窮通 Kanji
窮すれば通ず。 Necessity is the mother of invention.
言葉窮 Kanji
結婚してくれと言われたとき、私は言葉に窮した。 Asked to marry him, I was at a loss for words.
返答窮 Kanji
私は返答に窮した。 I was at a loss for an answer.