Synonyms|303Antonyms|41|Broader|2Narrower|0Related|548

53 entries under hard topic. ×

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inflexible(adjective, set, strong, firm)
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iron(adjective, set, strong, firm)
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rigid(adjective, set, strong, firm)
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rock-hard(adjective, compact, dense)
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rock-solid(adjective, compact, dense, rock-hard)
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rocky(adjective, set, strong, firm)
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secure(adjective, strong, substantial, sturdy)
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stable(adjective, strong, substantial, sturdy)
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stiff(adjective, set, strong, firm)
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stony(adjective, set, strong, firm)
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sturdy(adjective, strong, substantial, compact)
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tight(adjective, strong, solid, substantial)
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unyielding(adjective, firm, stiff, compact)
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APASmart Define. (2015). compacted thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/compacted/thesaurus/synonyms
ChicagoSmart Define. 2015. "compacted thesaurus" https://smartdefine.org/compacted/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, compacted thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/compacted/thesaurus/synonyms>.
MLASmart Define. "compacted thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/compacted/thesaurus/synonyms>