Side
Underpart
Underpart noun - The side or part facing downward from something.
Cite this Source
Underpart and Side. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/side/underpart
Side & Underpart. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/side/underpart>.
Underpart or Side. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/side/underpart.
Google Ngram Viewer shows how "side" and "underpart" have occurred on timeline