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76 entries under strong topic. ×

1
firm(adjective, calm, secure, solid)
1
fixed(adjective, firm, solid, determined)
1
fixed resistant(expression, adjective, calm, substantial)
1
fortified(adjective, solid, stable, sure)
1
great(adjective, right, healthy, trim)
1
husky(adjective, great, right, healthy)
1
immovable(adjective, firm, solid, usual)
1
immutable(adjective, calm, solid, steady)
1
in good health(expression, adjective, idiom, great)
1
invariable(adjective, calm, solid, steady)
1
iron(adjective, solid, stable, sure)
1
lasting(adjective, calm, solid, steady)
1
locked(adjective, solid, stable, sure)
1
nailed(adjective, calm, secure, firm)
1
perdurable(adjective, calm, solid, steady)
1
permanent(adjective, calm, solid, steady)
1
poised(adjective, calm, secure, firm)
1
reliable(adjective, calm, secure, firm)
1
resolute(adjective, calm, secure, firm)
1
safe(adjective, calm, secure, firm)
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APASmart Define. (2011). solid as a rock thesaurus. Retrieved September 28, 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 28, 2026).
HarvardSmart Define 2011, solid as a rock thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/solid_as_a_rock/thesaurus/synonyms>.
MLASmart Define. "solid as a rock thesaurus" 24 May 2011. Web. 28 September 2026. <https://smartdefine.org/solid_as_a_rock/thesaurus/synonyms>