IMPROBABLE Synonyms: 42 Similar and Opposite Words

improbable

adjective

(ˌ)im-ˈprä-bə-bəl

as in unlikely

not likely to be true or to occur it seems improbable that the two writers never met since they traveled in the same social circles

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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.

Recent Examples of improbable What Leaders Can Do The results that look improbable from the outside rarely surprise the people who produced them. —

Chris Rosenberg, Forbes.com, 12 June 2026 That particular Brunson 3 cut the Spurs’ lead — which had climbed as high as 29 — to only one, and the fans could sense an improbable finish. —

Rohan Nadkarni, NBC news, 11 June 2026 The Knicks themselves had mounted multiple improbable comebacks over the last two playoffs. —

Jacob Feldman, Sportico.com, 11 June 2026 That night Aguirre and his family were among the Mexican fans who had taken over the town square, singing, dancing and toasting the improbable. —

Scott M. Reid, Oc Register, 10 June 2026 See All Example Sentences for improbable

Recent Examples of Synonyms for improbable

unlikely

Adjective

But as the trial approached, both plaintiff and defendant sources indicated that a mid-trial settlement was unlikely.

— Alex Zietlow, Charlotte Observer, 11 Dec. 2025
The race to the bottom has been so ferocious this year that Beijing stepped in to rein in manufacturers, though economists believe deflationary pressures are unlikely to ease soon.

— John Liu, CNN Money, 11 Dec. 2025