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

Bezos previously said that Mamdani was creating a villain of billionaires. — Amethyst Martinez, USA Today, 27 Aug. 2026

The tax’s main sponsor, SEIU-United Healthworkers West, argued the proposition is clearly targeted at billionaires and no one else. — Ben Paviour, Sacbee.com, 27 Aug. 2026

The ambassador, a 69-year-old Texan billionaire, insisted on installing it, to have a place for the ship owner’s family to hang out, maybe flip an omelet for themselves. — CNN Money, 27 Aug. 2026

One of the newest members of the billionaire club, Scale AI cofounder Lucy Guo, is a more recent example of someone whose spending habits have remained relatively modest as her fortune has soared. — Preston Fore, Fortune, 27 Aug. 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