implausible

C2+ Topic:Describing Qualities

US /ɪmˈplɔzəbəl/ UK /ɪmˈplɔːzəbəl/ See IPA manual

adj

Meanings

1

adj
not seeming reasonable or probable; hard to believe

His alibi was so implausible that no one took it seriously.

Thesaurus

Synonyms

1 adj · not seeming reasonable or... improbable unlikely unbelievable incrediblefar-fetcheddubious

Opposites

plausible believable credible likely

Word family

Forms unplausible

Derived forms implausiblyimplausibilityimplausibleness

Related forms plausible plaudit applaud

Etymology

From in- ('not') + plausible, from Latin plausibilis ('deserving applause'), from plaudere ('to applaud, clap').

plausibilis Latin plaudere Latin

View etymology graph ->

Topics

Describing Qualities Word Formation & Derivatives

# implausible

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** ɪmˈplɔzəbəl
**IPA (UK):** ɪmˈplɔːzəbəl

## Meanings
1. not seeming reasonable or probable; hard to believe

## Examples
- His alibi was so implausible that no one took it seriously.

## Synonyms
- improbable
- unlikely
- unbelievable
- incredible
- far-fetched
- dubious

## Antonyms
- plausible
- believable
- credible
- likely

## Derived Forms
- implausibly
- implausibility
- implausibleness

## Related Forms
- plausible
- plaudit
- applaud

## Roots and Affixes
- Root: plausibilis
- Root: plaudere

## Etymology
From in- ('not') + plausible, from Latin plausibilis ('deserving applause'), from plaudere ('to applaud, clap').

## AI Etymology
Implausible comes from in- ('not') + plausible, from Latin plausibilis ('deserving applause'), from plaudere ('to applaud, clap'). The etymological trail includes Latin plausibilis and Latin plaudere. As an adjective, implausible means not seeming reasonable or probable; hard to believe. The same family is visible in derived forms such as implausibly, implausibility, and implausibleness and related forms such as plausible, plaudit, and applaud. Morphologically, the word is built from the elements named in its history, so the modern form preserves a visible compound, prefix, or suffix structure.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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