unheard-of

adjective

un·​heard-of ˌən-ˈhərd-ˌəv How to pronounce unheard-of (audio)
-ˌäv
: previously unknown
especially : unprecedented
moving at unheard-of speeds

Examples of unheard-of in a Sentence

houses selling at unheard-of prices
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.
In one market, Southpaw celebrated a year with virtually no turnover for managers—an almost unheard-of feat in an industry where attrition is a given. Stephen Wunker, Forbes, 12 Dec. 2024 Perennial powerhouse Volkswagen announced layoffs for tens of thousands of workers and is considering unheard-of plant closings. Chris Westfall, Forbes, 25 Nov. 2024 Congress must caution Trump against carrying out a tariff policy that would spike inflation to unheard-of levels. Orlando Sentinel and South Florida Sun Sentinel Editorial Boards, Orlando Sentinel, 11 Nov. 2024 By using the concepts of quantum mechanics to execute operations at previously unheard-of speeds and efficiency, quantum computing is revolutionizing industries and changing the technological landscape. Rohan Pinto, Forbes, 20 Nov. 2024 See all Example Sentences for unheard-of 

Word History

First Known Use

1592, in the meaning defined above

Time Traveler
The first known use of unheard-of was in 1592

Dictionary Entries Near unheard-of

Cite this Entry

“Unheard-of.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unheard-of. Accessed 20 Dec. 2024.

Kids Definition

unheard-of

adjective
un·​heard-of
-ˌəv,
-ˌäv
: previously unknown : unprecedented
moving at unheard-of speeds

More from Merriam-Webster on unheard-of

Last Updated: - Updated example sentences
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