implausible

adjective

im·​plau·​si·​ble (ˌ)im-ˈplȯ-zə-bəl 

: not plausible : provoking disbelief

implausibility

(ˌ)im-ˌplȯ-zə-ˈbi-lə-tē 

noun

implausibly

(ˌ)im-ˈplȯ-zə-blē 

adverb

Synonyms

• incredible
• incredulous
• unlikely
• impossible
• fantastical
• unconvincing
• inconceivable
• unbelievable
• absurd
• ridiculous
• doubtful
• unreasonable
• unthinkable

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

Her somewhat implausible problem is that her bad feelings—her irritation, her boredom—never register as such because of her beauty, her wealth, and her pedigree; so great is her beauty that even her nastiest moods feel like a sunny glow to others. —Claire Jarvis, New Yorker, 8 July 2025

Historically, spoofs were easily identifiable due to typographical errors, subpar visuals, and implausible claims. —Chuck Brooks, Forbes.com, 6 July 2025

As three people with remote connections to a house try to solve two brutal murders, the story becomes increasingly complicated and implausible, evolving into a fable about a cursed family. —Pat Tompkins, AFAR Media, 18 June 2025

Flashbacks, wildly implausible scenarios and expository dialogue abound. —Katie Kilkenny, HollywoodReporter, 12 June 2025

Word History

First Known Use

circa 1677, in the meaning defined above

Rhymes for implausible

• plausible

Kids Definition

implausible

adjective

im·​plau·​si·​ble (ˈ)im-ˈplȯ-zə-bəl 

: causing disbelief : not plausible

implausibility

(ˌ)im-ˌplȯ-zə-ˈbil-ət-ē 

noun

implausibly

(ˈ)im-ˈplȯ-zə-blē 

adverb