insanity
US
UK insanity n: (mental illness: madness)
SC 疯癫 fēng diān
SC 疯狂 fēng diān，fēng kuáng
TC 瘋狂
TC 瘋狂
SC 失去理智 fēng diān，shī qù lǐ zhì
There's a rumour that insanity runs in his family.
insanity n: figurative (stupidity: of act or situation) (行为、情况)
SC 疯狂，愚蠢，没有理性 fēng kuáng，yú chǔn，méi yǒu lǐ xìng
TC 瘋狂，愚蠢
TC 瘋狂，愚蠢
It's sheer insanity to buy all this stuff on credit.