madness Meaning in Cambridge American English Dictionary
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Meaning of "madness" - American English Dictionary

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madnessnoun [U]

 us   /ˈmæd·nəs/
mental illness: There was a history of madness in her family. Madness can also refer to behavior that is not reasonable when considering certain situations: It would be sheer madness (= crazy) to ignore the symptoms and do nothing.
(Definition of madness from the Cambridge Academic Content Dictionary © Cambridge University Press)
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