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 With no current agreement with developer Yukes, a direct sequel is highly improbable. — Alfred Konuwa, Forbes.com, 21 Aug. 2026 Instead, New York mounted an improbable if not impossible resurrection, Anunoby’s tip-in providing the exclamation point to the delirious comeback. — Dana O’Neil, CNN Money, 18 Aug. 2026 Where the first teaser established the scale of Oasis’ improbable return, the new trailer gets more personal. — Spin Staff, SPIN, 18 Aug. 2026 Iglesias remains synonymous with the Mets’ improbable turnaround that season. — Peter Sblendorio, New York Daily News, 18 Aug. 2026 See All Example Sentences for improbable

Recent Examples of Synonyms for improbable

unlikely

Adjective

The two most prominent, Hebrew and Yiddish, have always been unlikely bedfellows, frequently fighting with each other.

— Ilan Stavans, The Conversation, 31 Aug. 2026
Initial support is near the breakout point around $660, although a pullback of that magnitude is unlikely.

— Katie Stockton, CNBC, 31 Aug. 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 1 Sep. 2026.

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Synonyms of improbable

adjective

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