185 entries under strong topic. ×

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high-principled(good, solid, steady, consistent)
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hulk(adjective, hard, substantial, sturdy)
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hunk(adjective, hard, substantial, sturdy)
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impeccable(good, solid, steady, consistent)
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incorrupt(good, solid, steady, consistent)
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massed(adjective, hard, substantial, sturdy)
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mounted(secure, immobile, well-built, unmovable)
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okay(good, solid, steady, consistent)
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proved(good, solid, steady, consistent)
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puissant
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rock(adjective, hard, substantial, sturdy)
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screwed
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secured
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soldered
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spiked
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sterling(good, consistent, trustworthy, steadfast)
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strict(adjective, flat, firm, solid)
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taut
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there(good, solid, steady, consistent)
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tightened
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APASmart Define. (2015). stable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stable/thesaurus/synonyms
ChicagoSmart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, stable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>.
MLASmart Define. "stable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms>