84 entries under strong topic. ×

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hard as nails(expression, adjective, idiom, hard)
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harsh(adjective, sharp, pungent)
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hearty(fit, healthy, well, robust)
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hefty(fit, healthy, well, robust)
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in fine fettle(expression, idiom, fit, healthy)
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in good condition(expression, idiom, fit, healthy)
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in good shape(expression, idiom, fit, healthy)
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indefatigable(fit, healthy, well, robust)
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indigestible(adjective, hard, solid, stiff)
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inflexible(adjective, hard, solid, stiff)
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leathery(adjective, hard, solid, stiff)
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molded(adjective, hard, solid, stiff)
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muscular(fit, healthy, well, robust)
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physically fit(expression, fit, healthy, well)
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rigid(adjective, hard, solid, stiff)
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staunch(fit, healthy, well, robust)
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stiff(adjective, hard, solid, unfeeling)
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substantial(fit, healthy, well, robust)
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tight(adjective, hard, solid, stiff)
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tough as nails(expression, adjective, idiom, hard)
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APASmart Define. (2015). seasoned thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/seasoned/thesaurus/synonyms
ChicagoSmart Define. 2015. "seasoned thesaurus" https://smartdefine.org/seasoned/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, seasoned thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/seasoned/thesaurus/synonyms>.
MLASmart Define. "seasoned thesaurus" 8 September 2015. Web. 1 October 2026. <https://smartdefine.org/seasoned/thesaurus/synonyms>