n .
foolishness ; insanity ; imprudence 어리석음 ; 미친 짓 ; 경솔함

• You don't seem to understand what folly it would be to design a paper raincoat.
• The policeman tried to convince Buddy of the folly of running away from home ; he explained to him that his bed and home was more comfortable than a sidewalk, and that his mother's cooking was better than no cooking at all.
• The Territory of Alaska was once called Seward's Folly after William Henry Seward, the secretary of state who had pushed through its purchase by the United States. It was popularly thought at the time that the big piece of frozen real estate was worthless.
  국무 장관이었던 윌리암 헨리 슈워드가 미국 정부를 강력하게 밀어붙여 알래스카 땅을 매입하게 된 이후로, 알래스카는 한 때, '슈워드의 어리석은 짓거리'라고 불렀었다. 그 당시에는 다들 알래스카를 아무런 가치도 없는 커다란 얼음 덩어리라고 생각했던 것이다.
• folly 와 fool 은 같은 어근에서 유래한 것이다.