superbillionaire

noun

su·​per·​bil·​lion·​aire ˌsü-pər-ˌbi(l)-yə-ˈner 

-ˈbi(l)-yə-ˌner

plural superbillionaires

: a person whose wealth amounts to many billions (as of dollars or pounds)

… established the archetype of the shady superbillionaire who buys a soccer team to use as his personal plaything.

—Brian Phillips

Word History

First Known Use

1924, in the meaning defined above