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

Texts, screen grabs, recordings and other records recovered from a search of Rinderknecht’s cellphones and presented in court portrayed a man who was by turns lonely and livid, angry at billionaires and ex-romantic partners while seemingly scared about his own declining mental health. — Brittny Mejia, Los Angeles Times, 24 June 2026

On the Republican side, businessman Rick Jackson, a billionaire healthcare executive who grew up in poverty and previously lived in Atlanta public housing, won the GOP runoff earlier this month, securing his party's nomination. — Cbs News Atlanta Digital Team, CBS News, 23 June 2026

The autocrat delights in humiliating so many people, not least tech billionaires, including Jeff Bezos and Mark Zuckerberg, who once opposed him. — David Remnick, New Yorker, 23 June 2026

Russ Savage is making a nearly $300 million wager that a new class of billionaires is about to emerge. — Abby Montanez, Robb Report, 23 June 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