reinvent the wheel
idiomPart ofreinvent
reinvent the wheel — idiom
1. to lose time and energy by making something that has already been made successfu
1.idiom
Definition
to lose time and energy by making something that has already been made successfully, when you could simply use what already exists
Example
The team reinvented the wheel by building a payment system the company already had.
Rather than reinventing the wheel, Élise used the existing software to set up her online courses.