13 entries under bottom topic. ×

16
bottom(noun, turn, back, base, foundation)
12
underneath(noun, base, foundation, side, ground)
11
sole(noun, lowest part)
8
base(noun, side, lowest part)
8
undersurface(noun, side, over)
6
depths(noun, lowest part)
6
foot(noun, lowest part)
4
belly(noun, side)
4
nadir(noun, lowest part)
3
foundation(noun, base, ground, bed)
1
basement
1
root
1
soffit
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APASmart Define. (2015). underside thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/underside/thesaurus/synonyms
ChicagoSmart Define. 2015. "underside thesaurus" https://smartdefine.org/underside/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, underside thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/underside/thesaurus/synonyms>.
MLASmart Define. "underside thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/underside/thesaurus/synonyms>