Foundationless and 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. In some cases you can use "Fallacious" instead an adjective "Foundationless".

Fallacious

Fallacious adjective - Not using or following good reasoning.

Foundationless and fallacious are semantically related in baseless topic. You can use "Foundationless" instead an adjective "Fallacious".

Cite this Source
Fallacious and Foundationless. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/foundationless/fallacious
Foundationless & Fallacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/foundationless/fallacious>.
Fallacious or Foundationless. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/foundationless/fallacious.
Google Ngram Viewer shows how "foundationless" and "fallacious" have occurred on timeline