Synonyms|230Antonyms|32|Broader|3Narrower|0Related|172

29 entries under rigid topic. ×

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inelastic(hard, solid)
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inflexible(hard, solid)
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jelled(hard, solid)
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refractory(hard, solid)
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set(hard, solid)
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stiff(hard, solid)
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sturdy(hard, solid)
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tough(hard, solid)
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unyielding(hard, solid, unbending, unreceptive)
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APASmart Define. (2015). impermeable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impermeable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impermeable thesaurus" https://smartdefine.org/impermeable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impermeable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impermeable/thesaurus/synonyms>.
MLASmart Define. "impermeable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/impermeable/thesaurus/synonyms>