American English

Definition of wake up phrasal verb from the Oxford Advanced American Dictionary

 

wake up

 phrasal verb
phrasal verb
 
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Phrasal Verbs
to become more lively and interested Wake up and listen! see also wake

wake somebodyup

 
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to make someone feel more lively A cold shower will wake you up. The class needs to wake up. see also wake (1)
See the Oxford Advanced Learner's Dictionary entry: wake up