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top up

Meaning: to completely fill something like a glass or a container, or to increase the level of something like a phone card

Synonym: top off (American)

For example:

  • top sth up A waiter was topping our drinks up whenever they needed it.

  • top up sth What's the easiest way to top up a mobile phone card?

Nouns often used as objects with
top up: glass, drink, kettle, tank, phone card, mobile phone, account

Quick Quiz:

Excuse me, sir. Would you like me to top up
  1. your trousers?
  2. your drink?
  3. your hair?

Grammar explanation: separable and non-separable phrasal verbs

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1000 Phrasal Verbs in Context

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