68 entries under rigid topic. ×

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close-grained(hard, tough, solid, inflexible)
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fine-grained(hard, tough, solid, inflexible)
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impermeable(hard, solid)
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nonporous(hard, tough, solid, inflexible)
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sturdy(hard, tough, solid, inflexible)
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substantial(hard, solid)
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tough(hard, solid, inflexible)
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unbendable(adjective, firm, inflexible, unbending)
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APASmart Define. (2015). congealed thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/congealed/thesaurus/synonyms
ChicagoSmart Define. 2015. "congealed thesaurus" https://smartdefine.org/congealed/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, congealed thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/congealed/thesaurus/synonyms>.
MLASmart Define. "congealed thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/congealed/thesaurus/synonyms>