multibillionaire

noun

mul·​ti·​bil·​lion·​aire ˌməl-tē-ˌbi(l)-yə-ˈner 

-ˌtī-,

-ˈbi(l)-yə-ˌner

plural multibillionaires

: a person whose wealth is estimated at many billions (as of dollars or pounds)

an entrepreneur who became a multibillionaire

Examples of multibillionaire in a Sentence

Recent Examples on the Web

Under these conditions, the pay package would be worth about $1 trillion, boosting Musk from multibillionaire to the world’s first trillionaire. —Julia Shapero, The Hill, 8 Sep. 2025

The latest high-profile departure is at multibillionaire Elon Musk’s xAI. —Sheryl Estrada, Fortune, 5 Sep. 2025

The group that owned the Penguins before FSG took over in Dec. 2021, co-led by team icon Mario Lemieux and multibillionaire Ron Burkle, has expressed interest in reacquiring majority control from the current ownership, reaching out through former team CEO and president David Morehouse. —Rob Rossi, New York Times, 21 Aug. 2025

Elon Musk, the multibillionaire former Trump adviser, is threatening to primary GOP lawmakers and even start a new political party over his deficit concerns. —Zac Anderson, USA Today, 2 July 2025

Word History

First Known Use

1894, in the meaning defined above

Rhymes for multibillionaire

• extraordinaire
• multimillionaire
• abwehr
• affair
• affaire
• airfare
• altair
• armchair
• aware
• beware
• bugbear
• carfare