67 entries under set topic. ×

1
vitrified(adjective, solid, heavy, deep)
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adamantine(adjective, strong, hard, firm)
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hard-handed(adjective, strong, hard, compact)
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hard as nails(expression, adjective, idiom, strong)
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indurated(adjective, strong, hard, firm)
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iron(adjective, strong, hard, firm)
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rocky(adjective, strong, hard, firm)
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APASmart Define. (2016). compressed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/compressed/thesaurus/synonyms
ChicagoSmart Define. 2016. "compressed thesaurus" https://smartdefine.org/compressed/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, compressed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/compressed/thesaurus/synonyms>.
MLASmart Define. "compressed thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/compressed/thesaurus/synonyms>