English

Definition of wait up phrasal verb from the Oxford Advanced Learner's Dictionary

 

wait up

 phrasal verb
phrasal verb
 
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Phrasal Verbs
(North American English) used to ask somebody to stop or go more slowly so that you can join them Wait up—you’re walking too fast for me.
to wait for somebody to come home at night before you go to bed I’ll be back very late so don’t wait up for me.
See the Oxford Advanced American Dictionary entry: wait up