implausible

1 of 2

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

implausibility

2 of 2

noun

im·​plausibility (¦)im 

əm+

1

: the quality or state of being implausible

put on his guard by the implausibility of the man's explanation

2

: something implausible

Synonyms of implausible

Adjective

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

Examples of implausible in a Sentence

Adjective

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

Adjective

But this seems implausible today, when great powers cannot even cooperate on addressing climate change, let alone the full shape of world order. — Kurt M. Campbell, Foreign Affairs, 18 Aug. 2026

The idea that either could survive another four-year cycle (Messi is 39 and Ronaldo 41) and play at the 2030 World Cup seemed implausible. — Clemente Lisi, Forbes.com, 17 Aug. 2026

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

Word History

First Known Use

Adjective

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