50 entries under substantial topic. ×

16
resolute(adjective, calm, strong, secure, tough)
11
set(adjective, calm, strong, secure, firm)
10
firm(adjective, calm, set, mean, strong)
6
steadfast(adjective, calm, strong, secure, firm)
5
unwavering(adjective, calm, strong, secure, firm)
4
tough(adjective, calm, mean, strong, hard)
2
solid(adjective, calm, set, strong, complete)
2
steady(adjective, calm, strong, complete, secure)
1
abiding(adjective, calm, strong, secure, firm)
1
anchored(adjective, calm, strong, solid, steady)
1
balanced(adjective, calm, strong, secure, firm)
1
brick-wall(adjective, calm, strong, secure, firm)
1
calm(adjective, strong, secure, firm, solid)
1
constant(adjective, calm, strong, secure, firm)
1
deep-rooted(adjective, calm, strong, solid, steady)
1
durable(adjective, calm, strong, secure, firm)
1
enduring(adjective, calm, strong, secure, firm)
1
equable(adjective, calm, strong, secure, firm)
1
even(adjective, calm, strong, secure, firm)
1
fast(adjective, calm, strong, secure, firm)
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APASmart Define. (2015). set in stone thesaurus. Retrieved September 25, 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 25, 2026).
HarvardSmart Define 2015, set in stone thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/set_in_stone/thesaurus/synonyms>.
MLASmart Define. "set in stone thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/set_in_stone/thesaurus/synonyms>