Longman Dictionary of Contemporary English homepage

reinvent

verb
     
re‧in‧vent [transitive]
1 to make changes to an idea, method, system etc in order to improve it or make it more modern [= reform]:
plans to reinvent the American educational system
2

reinvent yourself

to do something differently from before, especially in order to improve or change the way people think of you:
Bowie has constantly reinvented himself during his long career.
3

reinvent the wheel

informal to waste time trying to find a way to do something when someone else has already discovered the best way to do it

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