Certain
Implausible
Implausible adjective - Too extraordinary or improbable to believe.
Usage example: the terrorist attacks generated a whole passel of implausible conspiracy theories that dishonor the memory of those who perished
Certain is an antonym for implausible.
Nearby Word: implausibly
Both words in one sentence
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Implausible Synchrony: The 333 stalker will time certain events to happen exactly at 3:33, and he can rest assured that Mac will be freaked out when he looks at his watch.
Source: Series / CSI: NY - While certain events are implausible (like attacking trucks with pea-shooters), it's theoretically possible...until you realize that the copyright date is before the time that the events in the book supposedly take place.
Source: Based on a Great Big Lie -
Implausible Deniability: The Seven Underground Kings has an argument between two doctors about whether a certain man is dead - the magic water even stops breathing and heartbeat, but the body is still warm and there is no rigor mortis.
Cite this Source
Implausible and Certain. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/certain/implausible
Certain & Implausible. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/certain/implausible>.
Implausible or Certain. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/certain/implausible.
Google Ngram Viewer shows how "certain" and "implausible" have occurred on timeline