vamp up

1. To improve, make better (as in a complete overhaul or refresher).

2. Informal expression like when using the expression to "brush up" on something.

1. I need to vamp up my wardrobe, now that I'm divorced I need a new look.

2. This book is only in English but it's really good you should read it. It'll give you an opportunity to vamp up your English.

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