Definitions from Wiktionary (reinvent the wheel)
▸ verb: (idiomatic) To do work unnecessarily when it has already been done satisfactorily by others; to attempt to devise a solution to a problem when a solution already exists.
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▸ verb: (idiomatic) To do work unnecessarily when it has already been done satisfactorily by others; to attempt to devise a solution to a problem when a solution already exists.
Similar:
warm over,
spin one's wheels,
flog a dead horse,
carry coals to Newcastle,
go round in circles,
push against an open door,
have other ideas,
break upon the wheel,
hamster wheel,
go in circles,
more...
Phrases:
▸ Words similar to reinvent the wheel
▸ Usage examples for reinvent the wheel
▸ Idioms related to reinvent the wheel
▸ Wikipedia articles (New!)
▸ Words that often appear near reinvent the wheel
▸ Rhymes of reinvent the wheel
▸ Invented words related to reinvent the wheel