IMPROBABLE Synonyms: 42 Similar and Opposite Words

improbable

adjective

(ˌ)im-ˈprä-bə-bəl

Definition of improbable

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 Seven months removed from their improbable appearance in February’s Super Bowl, the New England Patriots looked anything but super. — Peter Sblendorio, New York Daily News, 13 Oct. 2026 The Jaguars pulled off an improbable 19-17 victory on Cam Little's 57-yard field goal as time expired at Tottenham Hotspur Stadium on Sunday. — CBS News, 12 Oct. 2026 The improbable scenario was made possible by Ameer Abdullah’s 53-yard kickoff return that left 1 second on the clock. — ABC News, 11 Oct. 2026 Scented fleetingly with cinnamon, the dates gently smoked, their rightness with eggs sounds improbable. — Bill Addison, Los Angeles Times, 8 Oct. 2026 See All Example Sentences for improbable

Recent Examples of Synonyms for improbable

unlikely

Adjective

Friedman began her remarks by reminding the audience of von Furstenberg’s unlikely beginning, born in Brussels to a Holocaust survivor.

— Ariel Bielsky, Vogue, 24 Oct. 2026
Dahlia Scheindlin, a veteran pollster who works for left-of-center candidates and parties in Israel, speculated that the number of returning overseas voters was unlikely to be big enough to change the outcome of the election.

— Daniel Brook, New Yorker, 24 Oct. 2026

Definition of unlikely

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improbability

improbable

improbably

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“Improbable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/improbable. Accessed 27 Oct. 2026.

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Synonyms of improbable

adjective

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