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.
The three-day stretch of the highest possible flooding threat is almost unheard-of outside hurricane season. Rebekah Riess, CNN Money, 5 Apr. 2025 Greatest Hits is fast approaching 850 total weeks on the Billboard 200 — an almost unheard-of achievement that places it among the longest-charting albums in the ranking’s history. Hugh McIntyre, Forbes.com, 31 Mar. 2025 Soon, Carolco ran up the bills again paying the unheard-of $3 million price tag for Joe Eszterhas’ Basic Instinct (1992) script. Chris Yogerst, HollywoodReporter, 30 Mar. 2025 The following season, Bull netted another 50 times as Wolves won the Third Division title and their leading goalscorer was called up to the England squad — almost unheard-of for a player from what these days is called League One. Steve Madeley, New York Times, 28 Mar. 2025 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

Browse Nearby Words

Cite this Entry

“Unheard-of.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unheard-of. Accessed 20 Apr. 2025.

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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