fiat

noun

fi·​at ˈfē-ət How to pronounce fiat (audio)
-ˌat,
-ˌät;
ˈfī-ət,
-ˌat How to pronounce fiat (audio)
1
: an authoritative or arbitrary order : decree
government by fiat
2
: an authoritative determination : dictate
a fiat of conscience
3
: a command or act of will that creates something without or as if without further effort
According to the Bible, the world was created by fiat.

Examples of fiat in a Sentence

He runs the company by fiat. the school principal issued a fiat that caps were not to be worn inside the school, and that was that
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These novel digital assets are designed to maintain a stable value by being pegged to another asset, such as a fiat currency like the U.S. dollar or a commodity. Nina Bambysheva, Forbes, 4 Feb. 2025 When entering the crypto market, investors typically convert fiat currency like the U.S. dollar into cryptocurrency. Vinamrata Chaturvedi, Quartz, 3 Feb. 2025 The conservative preference for habit and custom over dictate and fiat recognizes that the plant must fit the soil. Dan McLaughlin, National Review, 30 Dec. 2024 Governing by fiat also contributes to an increasingly expansive view of executive powers. Nolan Finley, The Mercury News, 28 Jan. 2025 See all Example Sentences for fiat 

Word History

Etymology

Latin, let it be done, 3rd singular present subjunctive of fieri to become, be done — more at be

First Known Use

circa 1631, in the meaning defined at sense 3

Time Traveler
The first known use of fiat was circa 1631

Cite this Entry

“Fiat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fiat. Accessed 13 Feb. 2025.

Kids Definition

fiat

noun
fi·​at ˈfē-ət How to pronounce fiat (audio) -at How to pronounce fiat (audio)
-ät;
ˈfī-ət,
-at
: an order from someone in charge

Legal Definition

1
: decree
2
: an authoritative but arbitrary order
a brazen act of judicial fiatL. H. Tribe

More from Merriam-Webster on fiat

Last Updated: - Updated example sentences
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