mad Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “mad” in the English Dictionary

"mad" in British English

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madadjective

uk   /mæd/  us   /mæd/ (madder or maddest)
  • mad adjective (MENTALLY ILL)

B1 mentallyill, or ​unable to ​behave in a ​reasonable way: I ​think I must be going mad. Do I ​look like some mad ​old woman in this ​hat?

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  • mad adjective (SILLY)

B1 UK informal (US usually crazy) extremelysilly or ​stupid: [+ to infinitive] You're mad towalkhomealone at this ​time of ​night. He must be mad ​spending all that ​money on a ​coat. Some of the things she does are completely mad.
See also

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  • mad adjective (ANGRY)

A2 [after verb] informal very ​angry or ​annoyed: He's always ​complaining and it makes me so mad.mainly US Are you still mad at me?UK Kerry got really mad with Richard for not doing the ​washing up.UK Bill's ​untidiness drives me mad.

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  • mad adjective (ENTHUSIASTIC)

be mad about sb/sth B1 informalUK
to ​love someone or something: He's the first ​realboyfriend she's had and she's mad about him. He's mad about ​football.
be mad for sb/sth UK informal
to ​want someone or something very much, or to be very ​interested in someone or something: Everyone's mad for him and I just don't ​see the ​attraction.

-madsuffix

uk   / -mæd/  us   / -mæd/ UK
(Definition of mad from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mad" in American English

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madadjective [-er/-est only]

 us   /mæd/ (-dd-)
angry or ​annoyed: I get so mad at her I sometimes ​startscreaming.
(of an ​activity) ​wild, ​fast, or ​excited and not well ​controlled: We made a mad ​dash for the ​schoolbus.
infml very ​enthusiastic and ​interested: Jeanne’s mad about ​old Woody Allen ​movies.
mentallyill, or ​unable to ​behave in a ​reasonable way; ​insane: In his ​years as a ​prisoner of ​war, he often ​felt as if he might go mad.
(Definition of mad from the Cambridge Academic Content Dictionary © Cambridge University Press)
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