implausible

adjective

im·​plau·​si·​ble (ˌ)im-ˈplȯ-zə-bəl How to pronounce implausible (audio)
Synonyms of implausiblenext
: not plausible : provoking disbelief
an implausible excuse
implausibility noun
implausibly adverb

Examples of implausible in a Sentence

She's been making implausible claims. He gave an implausible excuse for showing up late for work. The novel has an implausible ending.
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.
But the first claim, about the number of the protesters, seemed to me highly implausible. Davood Moradian, The Atlantic, 26 Jan. 2026 For years before the Jaguars arrived in the 1990s, Jacksonville was dismissed as a bargaining-chip city — too small, too regional, too implausible. Mike Bianchi, The Orlando Sentinel, 24 Jan. 2026 The Republic’s militant Islamic ideology has made a durable compromise implausible, effectively locking Iran into the Sino-Russian orbit while committing crimes against humanity. Ariel Cohen, Forbes.com, 21 Jan. 2026 The scariest change, though, is that in an America where guardrails have fallen, tech-sector parasites run amok in our hands and heads, and trust in government is close to nonexistent, what seemed totally implausible in 1996 now feels like reasonable societal comment. Chris Jones, Chicago Tribune, 9 Jan. 2026 See All Example Sentences for implausible

Word History

First Known Use

circa 1677, in the meaning defined above

Time Traveler
The first known use of implausible was circa 1677

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Cite this Entry

“Implausible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/implausible. Accessed 27 Jan. 2026.

Kids Definition

implausible

adjective
im·​plau·​si·​ble (ˈ)im-ˈplȯ-zə-bəl How to pronounce implausible (audio)
: causing disbelief : not plausible
implausibility noun
implausibly adverb

More from Merriam-Webster on implausible

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