170 entries under strong topic. ×

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rocklike(adjective, hard, substantial, compact)
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rooted(adjective, hard, substantial, compact)
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steel(adjective, hard, tough, sturdy)
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steely(adjective, dull, hard, tough)
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stiff-necked(adjective, hard, tough, sturdy)
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tough inflexible(expression, hard, tough, sturdy)
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turned up(expression, piercing, strident, noisy)
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unrelenting(adjective, hard, tough, severe)
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unshakable(adjective, hard, substantial, compact)
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vociferous(piercing, strident, noisy, blaring)
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APASmart Define. (2016). heavy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, heavy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>.
MLASmart Define. "heavy thesaurus" 25 January 2016. Web. 26 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms>