Floor
Underside
Underside noun - The side or part facing downward from something.
Usage example: the underside of the cat's coat is pure white
Both words in one sentence
-
Buzz hangs onto the underside of an elevator to reach the floor where Al's apartment is.
Source: Ceiling Cling -
To the point where she scrubs the UNDERSIDE of the floor tiles as well as the surface.
Source: Super OCD
Cite this Source
Underside and Floor. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/floor/underside
Floor & Underside. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/floor/underside>.
Underside or Floor. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/floor/underside.
Google Ngram Viewer shows how "floor" and "underside" have occurred on timeline