madness
noun [ U ] uk/ˈmæd.nəs/ us/ˈmæd.nəs/
(STUPID BEHAVIOUR)
疯狂的行为；愚蠢（或危险）的行为
stupid or dangerous behaviour
To begin a war would be sheer madness. 发动战争完全是疯狂之举。
(MENTAL ILLNESS)
疯狂，神经错乱，精神失常
the state of being mentally ill, or unable to behave in a reasonable way
She felt as if she were sliding into madness. 她感觉自己像要发疯了。