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.
That implausible hold-harmless provision does not extend to firefighters and emergency medical services, except for one amendment, or to any other important services that cities and counties provide. Sun Sentinel Editorial Board, Sun Sentinel, 3 Jan. 2026 After the Bay of Pigs, the CIA tried to hatch more plots to overthrow Castro that included poisoning his cigar, among other implausible ideas. CBS News, 3 Jan. 2026 And whenever the plot seems too implausible, the superb performances of Sarah Snook and Dakota Fanning keep things anchored to emotional reality. Julie Hinds, Freep.com, 23 Dec. 2025 What To Know Holland told The Sunday Times that the discussion of suspects will begin with the most implausible, including Queen Victoria’s grandson, Prince Albert Victor, and her physician, Sir William Gull. Jenna Sundel, MSNBC Newsweek, 9 Dec. 2025 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

Browse Nearby Words

Cite this Entry

“Implausible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/implausible. Accessed 4 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!