Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “mad”


adjective [before noun] (HURRYING)    /mæd/ (madder or maddest)
hurrying or excited and not having time to think or plan : We made a mad dash for the train . I was in a mad panic / rush trying to get everything ready .UncontrolledBusy and activeHurrying and doing things quicklyHurrying and doing things quicklyBusy and active
(Definition of mad adjective (HURRYING) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of mad

Definitions of “mad” in other dictionaries

Word of the Day

best man

a male friend or relation of the bridegroom who stands with him and helps him during a marriage ceremony

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More