Definitions

implausible

[im-plaw-zuh-buhl] / ɪmˈplɔ zə bəl /

ADJECTIVE

not likely

Synonyms

STRONGEST

dubious farfetched flimsy impossible improbable inconceivable incredible unbelievable unconvincing unreasonable

WEAK

doubtful far-out fishy for the birds full of holes obscure problematic puzzling reachy suspect thin too much unsubstantial weak won't hold water won't wash

Antonyms

STRONGEST

believable convincing credible likely plausible possible realistic reasonable tenable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Projections of flood damage, heat mortality, agricultural disruption and wildfire risk have rested on an implausible baseline that describes an imaginary, modeled future.

From The Wall Street Journal • Apr. 29, 2026

Aswath Damodaran, the so-called ‘dean of valuation,’ said a popular characterization of a dystopian AI future of displacement and disruption was implausible.

From MarketWatch • Mar. 5, 2026

Police said he gave "implausible accounts" as to how the injuries had been caused.

From BBC • Feb. 13, 2026

But those implausible sci-fi scenarios, believe it or not, are nowhere near the worst-case possibilities.

From Salon • Jan. 18, 2026

A competition held by the Tribune brought a wave of implausible proposals.

From "The Devil in the White City" by Erik Larson

Vocabulary lists containing implausible

Grade 9, List 6

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The Namesake

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Summer of the Mariposas

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