top up

phrasal verb·1 sense·particle up

Usefulness

Meanings

1

Add more of something so it is full again

Why “up”? More of something is higher. Quantity, intensity and speed all rise.

The cafe worker topped up Leo's water glass at the counter.
The cafe worker added more water to make the glass full again.
Can I top up your glass?
Can I add more so your glass is full again?
I topped up my phone credit.
I added more credit to my phone.

Don't confuse with

top uptop off

Top up means add more of something so it is full again. Top off means complete something perfectly with a final touch.

Test yourself

The cafe worker topped up Leo's water glass at the counter. What does it mean?

Nearby in the meaning map

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