What does top-up mean?
Top-up means That serves as an addition.
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Pronunciation varies by accent · adjective
That serves as an addition.
English university students will have to pay top-up fees.
Energy will be generated from solar panels, water will be recycled and extracted from soil and the astronauts will grow their own food - they will also have an emergency ration and regular top-ups as new explorers join every two years.
I added a $20 top-up on my cellphone's data plan.
The reinforcement of anesthesia by an epidural “top-up” in combined spinal-epidural anesthesia may be explained by a dual mechanism: a volume effect compressing the dural sac and a local anesthetic effect.
Use top-up when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Top-up means That serves as an addition.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
English university students will have to pay top-up fees.
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