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English definition of “wake (sb) up”

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wake (sb) up

verb [I or T] uk phrasal verb with wake   /weɪk/ ( past tense woke or waked, past participle woken or waked) ( also wake up) us  

(STOP SLEEPING)

A1 to (cause to) become conscious after sleeping: Come on, wake up - breakfast is ready. He woke himself up with his own snoring!
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(REACT)

to start to react to a situation after a period in which you have done very little, or to make someone start to react to a situation: Companies need to wake up and take notice of the public's increasing concern with the environment.
(Definition of wake (sb) up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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