Synonyms|181Antonyms|16|Broader|0Narrower|0Related|196

63 entries under hard topic. ×

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impermeable(solid, rigid)
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sturdy(tough, solid, rigid, inflexible)
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substantial(solid, rigid)
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APASmart Define. (2015). jelled thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/jelled/thesaurus/synonyms
ChicagoSmart Define. 2015. "jelled thesaurus" https://smartdefine.org/jelled/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, jelled thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/jelled/thesaurus/synonyms>.
MLASmart Define. "jelled thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/jelled/thesaurus/synonyms>