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

Recent Examples on the Web
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Pass-through businesses One common characteristic of many such millionaires is their use of pass-through businesses, such as LLCs or sole proprietorships, that provide a lucrative tax benefit to their owners. — Aimee Picchi, CBS News, 17 Sep. 2026 Your daily latte habit is not keeping you from becoming a 401(k) millionaire. — Michelle Singletary, Washington Post, 16 Sep. 2026 Advances in technology have allowed anyone the opportunity to become an overnight sensation and potential millionaire, but all content creators must remember that all income is taxable income. — Staff Report, Hartford Courant, 16 Sep. 2026 The link between inequality and the everywhere millionaire runs through politics. — John Lanchester, New Yorker, 14 Sep. 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

Browse Nearby Words

Cite this Entry

“Millionaire.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millionaire. Accessed 29 Sep. 2026.

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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