implausible

adjective

im·​plau·​si·​ble (ˌ)im-ˈplȯ-zə-bəl 

: not plausible : provoking disbelief

an implausible excuse

implausibility

(ˌ)im-ˌplȯ-zə-ˈbi-lə-tē 

noun

implausibly

(ˌ)im-ˈplȯ-zə-blē 

adverb

Synonyms of implausible

• incredible
• incredulous
• unlikely
• impossible
• unconvincing
• inconceivable
• unbelievable
• absurd
• ridiculous
• doubtful
• 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

On April 1st, Trump’s presence generated dark comedy and cringily implausible encounters. — Margaret Talbot, New Yorker, 10 Aug. 2026

Even if this implausible interpretation were correct, Comey’s message would not be a crime. — Jonathan Chait, The Atlantic, 30 July 2026

The story is simple and implausible, about a man who sets out to drown his wife but falls ever more deeply in love with her instead. — Tim Page, The Washington Examiner, 25 July 2026

Total or even partial migrations can seem particularly implausible for organizations that depend on VMware technology. — Scharon Harding, ArsTechnica, 15 July 2026

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