madness Meaning in the Cambridge English Dictionary
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Meaning of “madness” in the English Dictionary

"madness" in British English

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madnessnoun [U]

uk   us   /ˈmæd.nəs/

madness noun [U] (STUPID BEHAVIOUR)

stupid or ​dangerousbehaviour: To ​begin a ​war would be ​sheer madness.

madness noun [U] (MENTAL ILLNESS)

the ​state of being ​mentallyill, or ​unable to ​behave in a ​reasonable way: She ​felt as if she were ​sliding into madness.
(Definition of madness from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"madness" in American English

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madnessnoun [U]

 us   /ˈmæd·nəs/
mentalillness: There was a ​history of madness in her ​family. Madness can also refer to ​behavior that is not ​reasonable when ​consideringcertainsituations: 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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