28 entries under firm topic. ×

1
set(adjective, strong, hard, substantial)
1
strong(adjective, hard, substantial, stiff)
1
thick(adjective, strong, hard, substantial)
0
durable(adjective, stiff, rigid)
0
indurate(adjective, stiff, rigid)
0
indurated(adjective, stiff, rigid)
0
packed(adjective, stiff, rigid)
0
unbreakable(adjective, stiff, rigid)
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APASmart Define. (2015). rocklike thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/rocklike/thesaurus/synonyms
ChicagoSmart Define. 2015. "rocklike thesaurus" https://smartdefine.org/rocklike/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, rocklike thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/rocklike/thesaurus/synonyms>.
MLASmart Define. "rocklike thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/rocklike/thesaurus/synonyms>