lunacy
noun [ U ] uk/ˈluː.nə.sɪ/ us/ˈluː.nə.sɪ/
愚蠢的行为,不明智的举动
stupid behaviour that will have bad results
It would be lunacy to try to climb the mountain in this weather. 疯子才会在这样的天气去爬山。
It was sheer lunacy spending all that money. 把那些钱都花光简直是愚蠢至极。
old-fashioned精神病,精神错乱
mental illness