50 entries under substantial topic. ×

1
fixed resistant(expression, adjective, calm, strong)
1
lasting(adjective, calm, strong, solid, steady)
1
nailed(adjective, calm, strong, solid, steady)
1
never-failing(adjective, firm, solid, steady)
1
perdurable(adjective, calm, strong, solid)
1
poised(adjective, calm, strong, secure, firm)
1
regular(adjective, complete, firm, solid, determined)
1
reliable(adjective, calm, strong, secure, firm)
1
safe(adjective, calm, strong, secure, firm)
1
secure(adjective, calm, strong, firm, solid)
1
solid as a rock(expression, adjective, idiom, calm, strong)
1
sound(adjective, calm, strong, secure, firm)
1
stabile(adjective, calm, strong, secure, firm)
1
stalwart(adjective, calm, strong, solid, steady)
1
staunch(adjective, calm, strong, secure, firm)
1
staying put(expression, adjective, calm, strong)
1
stout(adjective, calm, strong, solid, steady)
1
strong(adjective, calm, set, firm, solid)
1
sturdy(adjective, calm, strong, firm, solid)
1
sure(adjective, calm, strong, secure, firm)
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APASmart Define. (2015). set in stone thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/set_in_stone/thesaurus/synonyms
ChicagoSmart Define. 2015. "set in stone thesaurus" https://smartdefine.org/set_in_stone/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, set in stone thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/set_in_stone/thesaurus/synonyms>.
MLASmart Define. "set in stone thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/set_in_stone/thesaurus/synonyms>