Synonyms of 'brush something up or brush up on something'
▷ See brush
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If you are cramming for an examination, you are learning as much as possible in a short time just before you take the examination.
She was cramming hard for her exam.
When you revise for an examination, you read things again and make notes in order to be prepared for the examination.
I have to revise maths tonight.
If you study, you spend time learning about a particular subject or subjects.
The rehearsals make it difficult for her to study for her law exams.
Thesaurus for brush something up or brush up on something from the Collins English Thesaurus