Fallacious and Foundationless

Fallacious

Fallacious adjective - Not using or following good reasoning.

Foundationless and fallacious are semantically related in baseless topic. In some cases you can use "Foundationless" instead an adjective "Fallacious".

Foundationless

Foundationless adjective - Having no basis in reason or fact.
Usage example: a careful investigation proved that the charges were foundationless

Fallacious and foundationless are semantically related in not based on fact topic. You can use "Fallacious" instead an adjective "Foundationless".
Cite this Source
Foundationless and Fallacious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/fallacious/foundationless
Fallacious & Foundationless. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/fallacious/foundationless>.
Foundationless or Fallacious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/fallacious/foundationless.
Google Ngram Viewer shows how "fallacious" and "foundationless" have occurred on timeline