lunacy
n. 精神失常；愚蠢的行为
复数 lunacies
例句
The word lunacy, meaning "madness", is derived from Luna, the Latin name for the Roman goddess of the moon.
“lunacy”这个表示“疯狂”的词源自“Luna ”，是罗马神话中月光女神的拉丁名。
"That's lunacy," he blustered.
“真是疯了，” 他吼道。
《柯林斯英汉双解大词典》
It's sheer lunacy driving in such weather.
天气这样糟糕还开车，真是疯了。
《牛津词典》
