55 entries under noun topic. ×

4
sinkhole(drop, decline, fall, depression)
3
cup
3
lacuna
3
recess
3
scoop(depression, impression, dip, hollow)
3
sink(drop, decline, fall, depression)
2
excavation(depression, impression, dip, hollow)
2
imprint
2
indent(impression, dip, hollow)
2
notch
2
pocket(depression, impression, dip, hollow)
2
sinkage(drop, decline, fall, depression)
1
corner
1
curve(line, object, bend, bow)
1
niche
1
valley(depression, dish, impression, sink)
0
aperture
0
belief
0
conception
0
dive
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APASmart Define. (2015). concavity thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/concavity/thesaurus/synonyms
ChicagoSmart Define. 2015. "concavity thesaurus" https://smartdefine.org/concavity/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, concavity thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/concavity/thesaurus/synonyms>.
MLASmart Define. "concavity thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/concavity/thesaurus/synonyms>