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to brush up

to brush up

22 3.7
Refresh your knowledge or skill by practising and reviewing
  • phrasal verb
  • /brʌʃ ʌp/
translation icon : repasar
  • To prepare for the exam, she decided to brush up on her math skills by practicing problems every evening.

So I went back and brushed up on sort of Jewish rituals and.

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Examples

Synonyms

to review
vsto brush up
106 1.8

To study something again to remember it better

focuses on short practice and skill improvement as well as memory
to refresh
vsto brush up
50 2.8

Help someone or yourself remember something forgotten

aims more at improving ability through practice as well as memory help
to get better at
vsto brush up
34 1.8

To become more skilled in an activity by practicing

usually refers to short focused practice to regain or sharpen skill
to polish
vsto brush up
22 4.1

To make something better by small changes

focuses on renewing knowledge and basic skill rather than fine finishing
to brush up on
vsto brush up
19 3.5

Review and improve what you know about something you have not used for a while

is about short focused practice to regain skill rather than long improvement
to polish up
vsto brush up
  • Informal
4 3.5

Make something better by practicing or fixing it

is more about quick knowledge renewal rather than deep refinement

Antonyms

256 3.8

Fail to care for someone or something you should look after

How Skilled

to master
191 4.1
practice
585 1.6
to brush up
22 3.7
to review
106 1.8

Surface Forms

brush up infinitive
brushed up past
brushed up past participle
brushing up present participle
brushes up third person singular

Morphology

brush + up

The meaning 'to improve or refresh knowledge' is a metaphorical extension of 'brush' (to clean/refresh) combined with 'up' (completion or improvement). Although the constituents give a plausible cue of 'tidying/refreshing' something, the specific phrasal-verb sense 'brush up (on)' as 'review/relearn' is not fully predictable for a B1 learner without exposure, so it is only partially transparent.

Etymology

The phrasal verb brush up comes from the simple image of using a brush to clean or touch up something, like brightening a painting or brushing dust off a coat. One popular picture is of quickly tidying a surface to make it look new again, so today brush up means 'to refresh or improve' your knowledge or skill.