billionaire

noun

bil·​lion·​aire ˌbi(l)-yə-ˈner 

ˈbi(l)-yə-ˌner

: one whose wealth is estimated at a billion or more dollars, pounds, or other monetary units

Examples of billionaire in a Sentence

Recent Examples on the Web

Democratic and Republican voters agree that the American public should decide the future of AI development, not billionaires in Silicon Valley, according to new polling shared first with Semafor. — Ashley Gold, semafor.com, 16 Sep. 2026

Mayor Karen Bass and billionaire developer Rick Caruso appeared together at a groundbreaking for the new Palisades Recreation Center on Tuesday, in a sign that the sometimes icy relationship between the two 2022 mayoral rivals is thawing. — Noah Goldberg, Los Angeles Times, 16 Sep. 2026

Proposition 41, which is pitched as a government transparency measure requiring auditor approval for new tax proposals but would nullify the billionaire tax, carried 51% of voters in the poll, against 44% no and 5% undecided. — Andrew Graham, Sacbee.com, 16 Sep. 2026

Ultimately, of course, the two would be at odds, with Perlmutter helping his friend Nelson Peltz lead an activist campaign against Disney and Iger, with the billionaire being shown the door from Disney in 2023. — Alex Weprin, HollywoodReporter, 16 Sep. 2026

Word History

Etymology

billion + -aire (as in millionaire)

First Known Use

1841, in the meaning defined above

Rhymes for billionaire

• aftercare
• anywhere
• chinaware
• debonair
• dinnerware
• disrepair
• doctrinaire
• earthenware
• everywhere
• frigidaire
• kitchenware
• legionnaire

Kids Definition

billionaire

noun

bil·​lion·​aire ˌbil-yə-ˈna(ə)r 

-ˈne(ə)r;

ˈbil-yə-ˌna(ə)r, 

-ˌne(ə)r

: one whose wealth is a billion dollars or more