Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “brush up (on) sth”

brush up (on) sth

phrasal verb with brush     /brʌʃ/ verb
C1 to improve your knowledge of something already learned but partly forgotten : I thought I'd brush up (on) my French before going to Paris .Making things betterBecoming better
(Definition of brush up (on) sth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of brush up (on) sth

Word of the Day


to pour liquid slowly over something, especially in a thin line or in small drops

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More