Based and Foundationless

Opposite meaning words

Based adjective - Having a base.

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Foundationless is an antonym for based.

Nearby Words: base, basing

Foundationless adjective - Having no basis in reason or fact.

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Cite this Source

Foundationless and Based. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/based/foundationless

Based & Foundationless. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/based/foundationless>.

Foundationless or Based. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/based/foundationless.

Google Ngram Viewer shows how "based" and "foundationless" have occurred on timeline