implausibleness

Quality of doubtfulness

The quality of being implausible—of seeming unlikely to be true or believable.

The implausibleness of his alibi made the detective suspicious.

The word is rare; implausibility is the standard noun form.

improbability

unlikelihood

State of being improbable

doubtfulness · questionability · dubiousness · inconceivability · untenability · slim chance · outside chance

doubt

incredulity

Inability to accept something

mistrust · suspicion · wariness · misgivings · qualms · reservation · hesitation · dubiousness · uncertainty · cynicism

weakness

flimsiness

Lack of strength

insubstantiality · speciousness · fallaciousness · spuriousness · deficiency · inadequacy · illogicality · faultiness · hollowness · groundlessness

fiction

fabrication

Deliberately untrue statement

myth · fable · fantasy · hoax · untruth · falsehood · cock-and-bull story · fish story · yarn · stretcher

absurdity

preposterousness

Quality of being ridiculous

inconceivability · bizarreness · outlandishness · surrealism · grotesqueness · whimsicality · extravagance · hyperbole · exaggeration · fanciful

Opposites
believability

implausiblenessplausibility

Seeming likely true

plausibleness · believability · credibility · likelihood · verisimilitude

Family

applause, plausible, implausible, plausibility, plausibly, implausibly, implausibility, plausibilities

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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G