200 entries under solid topic. ×

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adjusted(adjective, strong, safe, sheltered)
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alive and kicking(expression, idiom, complete, vigorous)
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allegiant(adjective, firm, fixed, resolute)
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complete(vigorous, sturdy)
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decisive(good, strong, steady, consistent)
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effectual(complete, vigorous, sturdy)
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entire(complete, vigorous, sturdy)
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hard and fast(expression, adjective, idiom, firm)
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hardened inflexible(expression, firm, stiff, inflexible)
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high-principled(good, strong, steady, consistent)
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impeccable(good, strong, steady, consistent)
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in the pink(expression, idiom, complete, fit)
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incorrupt(good, strong, steady, consistent)
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intense(adjective, firm, fixed, sober)
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jelled(adjective, firm, stiff, inflexible)
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liege(adjective, firm, fixed, resolute)
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okay(good, strong, steady, consistent)
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patterned(adjective, firm, fixed, sturdy)
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placed(adjective, firm, stiff, inflexible)
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positioned(adjective, firm, stiff, inflexible)
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APASmart Define. (2015). stable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stable/thesaurus/synonyms
ChicagoSmart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>.
MLASmart Define. "stable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms>