23 entries under concavity topic. ×

14
cavern(noun, hollow, cave, convex)
13
cave(noun, hole, convex, small cave)
6
grot
5
cove
1
alcove(noun, receptacle)
1
curve
1
dale
1
dell
1
dingle
1
glade
1
glen
0
arch
0
bay
0
bottom
0
combe
0
cul-de-sac
0
grove
0
gully
0
of the sea(expression, idiom)
0
slade
<12>
11 years ago|5.5k views|share |citing 
APASmart Define. (2015). grotto thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/grotto/thesaurus/synonyms
ChicagoSmart Define. 2015. "grotto thesaurus" https://smartdefine.org/grotto/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, grotto thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/grotto/thesaurus/synonyms>.
MLASmart Define. "grotto thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/grotto/thesaurus/synonyms>