top up

present singular third person tops up · participle present topping up · participle past topped up · past topped up

1. ambitransitiveTo refill (or recharge) something.

   Please top up the tank tonight.

   2 more examples

   I shall top up with petrol before the long trip.

   For the CBD90, the primary power source is a 526kW/h lead acid battery driving four traction motors. As well as charging from a three-phase shore supply or regenerative braking, the batteries can be topped up by an EU Stage V-compliant 56kW JCB Ecomax diesel engine if required.

   2022 February 9, Ben Jones, “Batteries included for future shunters”, in RAIL, number 950, page 56

   Synonyms: top off

   1. ambitransitiveidiomaticTo add to a balance in an account (e.g., mobile payment, debit card, bank account).

      I shall top up the mobile phone at the supermarket.

      1 more example

      Users can top up their wallet balance and start sending and receiving money between mobile phones.

      Synonyms: top off, add value

   2. UKambitransitiveTo refill a drink.

      The waitress topped up my coffee every few minutes.

      Synonyms: top off, top off

   3. ambitransitiveTo add to a number or amount, to bring something up to a certain level.

      Synonyms: top off

2. ambitransitiveslangTo have sex (with).

   We had dinner, went back to her place, and started topping up.

   Synonyms: tup