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

Spain’s talisman was Lamine Yamal, its nineteen-year-old right winger, who plays the game with bleached tips, implausible speed, and nonchalance, but its superego was Rodri, the team’s central midfielder and captain. — Sam Knight, New Yorker, 20 July 2026

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

Such an achievement had looked implausible for Zverev’s entire career. — Ava Wallace, New York Times, 12 July 2026

What happened, Wells' parents say, is a mystery riddled with conflicting stories, implausible explanations and missing details. — ABC News, 11 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