Foundationless
Foundationless adjective - Having no basis in reason or fact.
Vain and foundationless are semantically related. in not based on fact topic. In some cases you can use "Vain" instead an adjective "Foundationless".
Vain
Vain adjective - Having too high an opinion of oneself.
Foundationless and vain are semantically related. Sometimes you can use "Foundationless" instead an adjective "Vain".
Mutual synonyms
Cite this Source
Vain and Foundationless. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/foundationless/vain
Foundationless & Vain. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/foundationless/vain>.
Vain or Foundationless. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/foundationless/vain.
Google Ngram Viewer shows how "foundationless" and "vain" have occurred on timeline