Bottom
Bottom noun - The side or part facing downward from something.
Usage example: that side of the shelf is supposed to be the bottom, so turn it over before you assemble the bookcase
Underpart and bottom are semantically related. in underside topic. In some cases you can use "Underpart" instead a noun "Bottom".
Underpart
Underpart noun - The side or part facing downward from something.
Usage example: the bird's underparts were white
Mutual synonyms
Cite this Source
Underpart and Bottom. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/bottom/underpart
Bottom & Underpart. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/bottom/underpart>.
Underpart or Bottom. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/bottom/underpart.
Google Ngram Viewer shows how "bottom" and "underpart" have occurred on timeline