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English definition of “out of your mind”

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out of your mind

unable to behave or deal with things normally because something has made you very worried, unhappy, or angry: She was out of her mind with grief. I'd go out of my mind if I had to do her job all day! informal extremely stupid or mentally ill: You must be out of your mind paying £500 for one night in a hotel!
(Definition of out of your mind from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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