Synonyms of 'mug up (on) something'
▷ See mug
studyDictionary, cram (informal) , bone up on (informal)
It's advisable to mug up on your Spanish before you go.
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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.
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 mug up (on) something from the Collins English Thesaurus