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English definition of “top sth up”

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top sth up

UK ( US top sth off) phrasal verb with top
 
 
/tɒp/ verb [T] ( present participle topping, past tense and past participle topped)
to add more liquid to a container in order to make it fullFilling and completing
to add more of something, especially money, to an existing amount to create the total you need: Can I top up my mobile phone here?Increasing and intensifying
(Definition of top sth up from the Cambridge Learners Dictionary © Cambridge University Press)
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