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

 

top up

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    top somethingup

    (especially British English)
     
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  1. 1to fill a container that already has some liquid in it with more liquid Top the car up with oil before you set off. Top the oil up before you set off. Can I top your glass up (= give you some more to drink)? Fill the glass half full with beer and top it up with lemonade.
  2. 2to increase the amount of something to the level you want or need She relies on tips to top up her wages. (British English) I need to top up my mobile phone (= pay more money so you can make more calls). Sunbeds are the ideal way to keep your tan topped up.
  3. related noun top-up
(especially British English) to fill somebody’s glass or cup with something more to drink Can I top you up? related noun top-up

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