Synonyms|71Antonyms|1|Broader|4Narrower|0Related|16
14
cavern(noun, hollow, concavity, cave, convex)
13
cave(noun, hole, concavity, convex, small cave)
8
den(noun, cave, small cave)
7
hollow(noun, cave, small cave)
6
grot(noun, concavity)
5
hole(noun, small cave)
5
cove(noun, concavity)
4
crypt(noun, place)
3
antre(noun, cave)
2
cavity(noun, cave)
1
alcove(noun, receptacle, concavity)
1
bower(noun, receptacle)
1
cellar
1
arbor(noun, receptacle)
1
conservatory(noun, receptacle)
1
greenhouse(noun, receptacle)
1
sewer
1
subterrane(noun, cave)
1
bunker
1
burrow
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APASmart Define. (2015). Grotto thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/grotto/thesaurus/synonyms
ChicagoSmart Define. 2015. "Grotto thesaurus" https://smartdefine.org/grotto/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, Grotto thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/grotto/thesaurus/synonyms>.
MLASmart Define. "Grotto thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/grotto/thesaurus/synonyms>