
Mug up on
Last-Minute Study
Used when studying a lot of information in a short time before an exam or meeting.

I have to mug up on French verbs tonight for tomorrow's test.
Intensive Learning
Implies focused and concentrated study to understand a subject quickly.

She's mugging up on her chemistry because she wants to ace the quiz.
Not Casual Reading
Indicates active learning, not just reading for pleasure or general interest.

John isn't just reading; he's mugging up on Roman history for his dissertation.
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