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93 entries under solid topic. ×

1
immutable(adjective, calm, strong, steady)
1
invariable(adjective, calm, strong, steady)
1
iron(adjective, strong, stable, sure)
1
lasting(adjective, calm, strong, steady)
1
locked(adjective, strong, stable, sure)
1
nailed(adjective, calm, strong, secure, firm)
1
perdurable(adjective, calm, strong, steady)
1
permanent(adjective, calm, strong, steady)
1
poised(adjective, calm, strong, secure, firm)
1
regular(adjective, firm, determined, usual)
1
reliable(adjective, calm, strong, secure, firm)
1
resolute(adjective, calm, strong, secure, firm)
1
safe(adjective, calm, strong, secure, firm)
1
safe and sound(expression, adjective, idiom, strong)
1
secure(adjective, calm, strong, firm)
1
set(adjective, calm, strong, secure, firm)
1
set in stone(expression, adjective, idiom, calm, strong)
1
settled(adjective, firm, determined, usual)
1
sound(adjective, calm, strong, secure, fit)
1
stabile(adjective, calm, strong, secure, firm)
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APASmart Define. (2011). solid as a rock thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/solid_as_a_rock/thesaurus/synonyms
ChicagoSmart Define. 2011. "solid as a rock thesaurus" https://smartdefine.org/solid_as_a_rock/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2011, solid as a rock thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/solid_as_a_rock/thesaurus/synonyms>.
MLASmart Define. "solid as a rock thesaurus" 24 May 2011. Web. 26 September 2026. <https://smartdefine.org/solid_as_a_rock/thesaurus/synonyms>