16
hollow(adjective, depressed, empty, out, curved)
9
sunken(adjective, depressed, curved, submerged, convex)
7
cavernous(adjective, large, hollow, concavity, convex)
7
dished(adjective, depressed, hollow)
6
indented(adjective, depressed, curved, convex, inward)
5
depressed(adjective, concavity)
5
pit(noun, verb, turn, produce, clean)
4
arched(adjective, concavity)
4
biconcave(adjective, depressed, hollow, curved, pockmarked)
4
cavity
4
concavity
4
convex(twist, bend, bow, bulge, veer)
4
cupped(adjective, depressed, empty, void, hollow)
4
depression
4
round(adjective, adverb, twist, bend, depressed)
4
vaulted(adjective, concavity)
3
basin
3
bowl
3
bowl-shaped
3
dented(adjective, depressed, curved)
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APASmart Define. (2015). concave thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/concave/thesaurus/synonyms
ChicagoSmart Define. 2015. "concave thesaurus" https://smartdefine.org/concave/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, concave thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/concave/thesaurus/synonyms>.
MLASmart Define. "concave thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/concave/thesaurus/synonyms>