11 entries under rarity topic. ×

14
hollow(adjective, deep, empty, out, concavity)
2
spongy
1
flimsy
1
light
1
slight
1
thin
0
compressible
0
fine
0
rare
0
subtile
0
tenuous
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APASmart Define. (2015). cavernous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/cavernous/thesaurus/synonyms
ChicagoSmart Define. 2015. "cavernous thesaurus" https://smartdefine.org/cavernous/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, cavernous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/cavernous/thesaurus/synonyms>.
MLASmart Define. "cavernous thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/cavernous/thesaurus/synonyms>