mug up - definition and synonyms

phrasal verb [intransitive/transitive] British informal
present tense
I/you/we/theymug up
he/she/itmugs up
present participlemugging up
past tensemugged up
past participlemugged up
  1. mug up (on) something to quickly learn something or check that you know it, for example before an examination
See also main entry: mug