23 entries under noun topic. ×

4
depression(benefit, cheer, cavity, concavity)
3
cavity
2
basin
2
concavity
2
dimple
2
hole
1
recess
1
dip
1
impression
1
ingrowth
1
sinkage(depression, mountain, fullness)
1
trench
1
trough
0
blues(benefit, cheer, comfort)
0
deflation(calm, happiness)
0
dejection
0
desolation
0
despair
0
despondency
0
slump
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APASmart Define. (2015). protuberance thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/protuberance/thesaurus/antonyms
ChicagoSmart Define. 2015. "protuberance thesaurus" https://smartdefine.org/protuberance/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, protuberance thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/protuberance/thesaurus/antonyms>.
MLASmart Define. "protuberance thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/protuberance/thesaurus/antonyms>