Bottom level
Base and bottom level are semantically related. In some cases you can use "Base" instead a noun phrase "Bottom level".
Base
Base noun - An immaterial thing upon which something else rests.
Mutual synonyms
Cite this Source
Base and Bottom level. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/bottom_level/base
Bottom level & Base. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/bottom_level/base>.
Base or Bottom level. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/bottom_level/base.
Google Ngram Viewer shows how "bottom level" and "base" have occurred on timeline