184 entries under solid topic. ×

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condensed(hard, tough, rigid, inflexible)
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congealed(hard, tough, rigid, inflexible)
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entire(complete, vigorous)
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fine-grained(hard, tough, rigid, inflexible)
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flawless(complete, vigorous)
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herculean(strong, vigorous, robust, brawny)
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impenetrable(hard, rigid)
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impermeable(hard, rigid)
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imperturbable(adjective, firm, stable, fixed)
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inelastic(hard, tough, rigid, inflexible)
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intact(complete, vigorous)
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jelled(hard, tough, rigid, inflexible)
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levelheaded(adjective, firm, stable, fixed)
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liege(adjective, firm, stable, fixed)
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never-failing(adjective, firm, stable, fixed)
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nonporous(hard, tough, rigid, inflexible)
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patterned(adjective, firm, stable, fixed)
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regular(adjective, firm, stable, fixed)
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reserved(adjective, firm, stable, fixed)
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right as rain(expression, idiom, complete, vigorous)
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APASmart Define. (2016). sturdy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sturdy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sturdy thesaurus" https://smartdefine.org/sturdy/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sturdy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sturdy/thesaurus/synonyms>.
MLASmart Define. "sturdy thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/sturdy/thesaurus/synonyms>