Synonyms|219Antonyms|0|Broader|0Narrower|0Related|0
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prearranged(adjective, firm, determined, usual, regular)
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predetermined(adjective, firm, determined, usual, regular)
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prescribed(adjective, firm, determined, usual, regular)
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regular(adjective, firm, solid, determined, usual)
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reliable(adjective, calm, strong, secure, firm)
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resolute(adjective, calm, strong, secure, firm)
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resolved(adjective, firm, determined, usual, regular)
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right as rain(expression, adjective, idiom, great, right)
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rigid(adjective, firm, determined, usual, regular)
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rooted(adjective, firm, determined, usual, regular)
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safe(adjective, calm, strong, secure, firm)
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safe and sound(expression, adjective, idiom, strong, solid)
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scheduled(adjective, firm, determined, usual, regular)
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secure(adjective, calm, strong, firm, solid)
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set(adjective, calm, strong, secure, firm)
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set in stone(expression, adjective, idiom, calm, strong)
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settled(adjective, firm, solid, determined, usual)
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solid(adjective, calm, strong, firm, fast)
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sound(adjective, calm, strong, secure, fit)
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specified(adjective, firm, determined, usual, regular)
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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>