Implausible and Unconceivable

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

Unconceivable and implausible are semantically related in likely topic. In some cases you can use "Unconceivable" instead an adjective "Implausible".

Nearby Word: implausibly

Unconceivable

Unconceivable adjective - Too extraordinary or improbable to believe.
Usage example: it's unconceivable that a once-promising actor could end up this way

Implausible and unconceivable are semantically related in likely topic. You can use "Implausible" instead an adjective "Unconceivable".
Cite this Source
Unconceivable and Implausible. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/implausible/unconceivable
Implausible & Unconceivable. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/implausible/unconceivable>.
Unconceivable or Implausible. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/implausible/unconceivable.
Google Ngram Viewer shows how "implausible" and "unconceivable" have occurred on timeline