Cin ‧ der ‧ el ‧ la /ˌsɪndəˈrelə/ BrE AmE noun [countable]
a person or thing that has been ignored or treated as less important than other people or things
Cinderella of
Their economy was the Cinderella of the industrialized world.
—Cinderella adjective [only before noun] :
Mental health care has been the Cinderella service for too long.