im·​prob·​a·​ble | \ (ˌ)im-ˈprä-bə-bəl How to pronounce improbable (audio) , -ˈpräb-bəl \

Definition of improbable

: unlikely to be true or to occur also : unlikely but real or true

Other Words from improbable

improbability \ (ˌ)im-​ˌprä-​bə-​ˈbi-​lə-​tē How to pronounce improbable (audio) \ noun
improbably \ (ˌ)im-​ˈprä-​bə-​blē How to pronounce improbable (audio) , -​ˈpräb-​blē \ adverb

Synonyms & Antonyms for improbable



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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 Where better to illustrate this point than New York City and its environs, where lives regularly intersect in the most improbable of ways? Alice Mcdermott, New York Times, 22 June 2022 There were several good stories with the Warriors, but Payton’s may be the most improbable. Gary Washburn,, 18 June 2022 That race was also the beginning of one of the most improbable Triple Crown wins ever—and one of the best investments in horse-racing history. Jim Chairusmi, WSJ, 9 June 2022 Oregon State blew a nine-run ninth inning lead and then gave up a walk-off home run in the 10th, dropping a 25-22 heartbreaker to the UCLA Bruins in a wild and improbable matchup at Scottsdale Stadium. oregonlive, 28 May 2022 Saturday's victory continued arguably the most improbable run to the Women's College World Series in program history. P.j. Brown, The Arizona Republic, 28 May 2022 However, Rich Strike — who, at 80-1 odds, was the most improbable Derby winner in a century — did not come to Baltimore, resting instead for the Belmont Stakes on June 11. Hayes Gardner, Baltimore Sun, 23 May 2022 Following up one of our greatest movie villains seemed impossible and improbable, but Nolan and Tom Hardy met the moment with a wholly original character that has defined the actor’s career and remains a vital part of this franchise. Ben Flanagan |, al, 3 Mar. 2022 So a Butler victory would have been one of the most improbable in college basketball this year. David Woods, The Indianapolis Star, 24 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'improbable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of improbable

1598, in the meaning defined above

History and Etymology for improbable

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

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Time Traveler for improbable

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The first known use of improbable was in 1598

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Last Updated

2 Jul 2022

Cite this Entry

“Improbable.” Dictionary, Merriam-Webster, Accessed 3 Jul. 2022.

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More Definitions for improbable


im·​prob·​a·​ble | \ im-ˈprä-bə-bəl How to pronounce improbable (audio) \

Kids Definition of improbable

: not likely : not probable improbable stories

Other Words from improbable

improbably \ -​blē \ adverb an improbably happy ending

More from Merriam-Webster on improbable

Nglish: Translation of improbable for Spanish Speakers

Britannica English: Translation of improbable for Arabic Speakers


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