Number one
Number one adjective - Coming before all others in importance.
Underlying and number one are semantically related. In some cases you can use "Underlying" instead an adjective phrase "Number one".
Underlying
Underlying adjective - Of or relating to the simplest facts or theories of a subject.
Number one and underlying are semantically related. Sometimes you can use "Number one" instead an adjective "Underlying".
Cite this Source
Underlying and Number one. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/number_one/underlying
Number one & Underlying. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/number_one/underlying>.
Underlying or Number one. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/number_one/underlying.
Google Ngram Viewer shows how "number one" and "underlying" have occurred on timeline