improbable

adjective

im·​prob·​a·​ble (ˌ)im-ˈprä-bə-bəl How to pronounce improbable (audio)
-ˈpräb-bəl
: unlikely to be true or to occur
also : unlikely but real or true
improbably
(ˌ)im-ˈprä-bə-blē How to pronounce improbable (audio)
-ˈpräb-blē
adverb

Examples of improbable in a Sentence

The team made an improbable comeback. it seems improbable that the two writers never met since they traveled in the same social circles
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.
Opposing independence exceeds not supporting it, and would foreclose the possibility, however improbable, that both sides might one day amicably part ways. Stephen Wertheim, Foreign Affairs, 28 Oct. 2025 More importantly, Flacco has helped the Bengals stay in contention for the AFC North division title, something that seemed improbable when franchise QB Joe Burrow went down with an injury early in the season. Rowan Fisher-Shotton, MSNBC Newsweek, 27 Oct. 2025 Missouri’s regular-season finale against Arkansas falls just five weeks after the injury, making a return by then improbable. Zach Sweet, Kansas City Star, 27 Oct. 2025 The Pittsburgh Penguins fought until the end and earned themselves an improbable point in what has been an improbable start to the season, ultimately falling to the Columbus Blue Jackets 5-4 in a shootout at PPG Paints Arena on Saturday. Josh Yohe, New York Times, 26 Oct. 2025 See All Example Sentences for improbable

Word History

Etymology

Middle French or Latin; Middle French, from Latin improbabilis, from in- + probabilis probable

First Known Use

1598, in the meaning defined above

Time Traveler
The first known use of improbable was in 1598

Browse Nearby Words

Cite this Entry

“Improbable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/improbable. Accessed 29 Oct. 2025.

Kids Definition

improbable

adjective
im·​prob·​a·​ble (ˈ)im-ˈpräb(-ə)-bəl How to pronounce improbable (audio)
: not probable : unlikely to be true or to occur
improbably adverb

More from Merriam-Webster on improbable

Last Updated: - Updated example sentences
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