brain-dead definition, meaning - what is brain-dead in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “brain-dead”

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brain-dead

adjective uk   us   /ˈbreɪn.ded/
If someone is brain-dead, they have serious and permanent damage to their brain, and need machines in order to stay alive. humorous If someone is brain-dead, their mind is not working effectively, usually because they are very tired or very bored: By the time I leave work I'm completely brain-dead.
(Definition of brain-dead from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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