millionaire

noun

mil·​lion·​aire ˌmi(l)-yə-ˈner How to pronounce millionaire (audio)
ˈmi(l)-yə-ˌner
Synonyms of millionairenext
: a person whose wealth is estimated at a million or more (as of dollars or pounds)

Examples of millionaire in a Sentence

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Another star turn goes to Mary Ellen Pleasant, who was arguably America’s first Black millionaire and inarguably one of the most canny and chameleonlike figures this country has ever produced. — Kathryn Schulz, New Yorker, 26 Oct. 2026 Happy peasants, miserable millionaires Graham first spotted the pattern in China. — Nick Lichtenberg, Fortune, 24 Oct. 2026 And a reminder that these millionaires are playing a child’s game, because no one relishes it with quite the joy and verve and passion and emotion and occasional tantrum like Doncic does. — Los Angeles Times, 24 Oct. 2026 Her positive testimonial was echoed by a downer-loving millionaire who attended with her brilliant and terrifyingly thin mother for her 70th birthday. — Kate Berlant, Condé Nast Traveler, 22 Oct. 2026 See All Example Sentences for millionaire

Word History

Etymology

French millionnaire, from million, from Middle French milion

First Known Use

1786, in the meaning defined above

Time Traveler
The first known use of millionaire was in 1786

Phrases Containing millionaire

Rhymes for millionaire

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Browse Nearby Words

million
millionaire
millionairedom
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Cite this Entry

“Millionaire.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millionaire. Accessed 28 Oct. 2026.

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Kids Definition

millionaire

noun
mil·​lion·​aire ˌmil-yə-ˈna(ə)r How to pronounce millionaire (audio)
-ˈne(ə)r, 
ˈmil-yə-ˌna(ə)r, 
-ˌne(ə)r
: one whose wealth is estimated at a million or more (as of dollars)

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