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English definition of “switch off”

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switch off

informal
verb [T, I usually + adv/prep] uk phrasal verb with switch   /swɪtʃ/ us  
to stop giving your attention to someone or something: If he gets bored, he just switches off and looks out the window.
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(Definition of switch off from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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