137 entries under firm topic. ×

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safe(adjective, solid, stable, fixed)
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secure(adjective, solid, stable, fixed)
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sedate(adjective, sensible, solid, steady)
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self-possessed(adjective, sensible, solid, steady)
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sensible(adjective, solid, steady, stable)
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serene(adjective, sensible, solid, steady)
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serious-minded(adjective, sensible, solid, steady)
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set in stone(expression, adjective, idiom, solid)
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sober(adjective, sensible, solid, steady)
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solid as a rock(expression, adjective, idiom, solid)
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sound(adjective, solid, stable, fixed)
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stabile(adjective, solid, stable, fixed)
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staid(adjective, sensible, solid, steady)
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steady-going(adjective, solid, stable, fixed)
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substantial(adjective, solid, stable, fixed)
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unfluctuating(adjective, solid, stable, fixed)
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unvarying(adjective, solid, stable, fixed)
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APASmart Define. (2015). unswerving thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unswerving/thesaurus/synonyms
ChicagoSmart Define. 2015. "unswerving thesaurus" https://smartdefine.org/unswerving/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unswerving thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unswerving/thesaurus/synonyms>.
MLASmart Define. "unswerving thesaurus" 21 December 2015. Web. 29 September 2026. <https://smartdefine.org/unswerving/thesaurus/synonyms>