Root
Root noun - A point or place at which something is invented or provided.
Underlying and root are semantically related In some cases you can use "Underlying" instead an adjective "Root".
Underlying
Underlying adjective - Of or relating to the simplest facts or theories of a subject.
Root and underlying are semantically related in fundamental topic. Sometimes you can use "Root" instead an adjective "Underlying".
Both words in one sentence
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The underlying theory of the Enneagram is that each of the nine "Enneatypes" has a core "Vice," a single root insecurity that serves as the Freudian Excuse which the entire personality type is thereafter built on.
Source: Useful Notes / The Enneagram
Cite this Source
Underlying and Root. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/root/underlying
Root & Underlying. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/root/underlying>.
Underlying or Root. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/root/underlying.
Google Ngram Viewer shows how "root" and "underlying" have occurred on timeline