brush up

verb

1. troften foll byon to refresh one's knowledge, skill, or memory of (a subject)
2. to make (a person or oneself) tidy, clean, or neat as after a journey

noun

1. the act or an instance of tidying one's appearance (esp in the phrase wash and brush-up )

Example Sentences

She spent quality time with her grandma who lives in China, brushed up her skills on the piano and read a stack of books.

From BBC

The lieutenant governor had called LGBTQ+ people "filth" and advocated for brushing up on Adolf Hitler quotes.

From Salon

This will require that you brush up on your fish identification skills, but it's a small price to pay for protecting our fish, saving on groceries and limiting unexpected and urgent trips to the restroom.

From Salon

For those hoping to brush up on their Tagalog during Filipino History Month, that means “I love you.”

From Los Angeles Times

This is perhaps why an adviser to Donald Trump tells me the former President hasn’t spent his prep time brushing up on policy.

From BBC