Synonyms|119Antonyms|28|Broader|3Narrower|5Related|42
16
bottom(noun, turn, back, base, foundation)
12
underneath(noun, base, foundation, side, ground)
11
sole(noun, bottom, lowest part)
8
base(noun, side, bottom, lowest part)
8
undersurface(noun, side, over, bottom)
6
depths(noun, bottom, lowest part)
6
foot(noun, bottom, lowest part)
5
reverse(noun, opposite)
5
underbelly
4
belly(noun, side, bottom)
4
nadir(noun, bottom, lowest part)
3
bed
3
abapical
3
buttocks
3
foundation(noun, base, ground, bottom, bed)
3
fundament
2
bottomland
2
bum
2
butt
2
fanny
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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>