77 entries under adjective topic. ×

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steadfast(firm, sensible, solid, steady)
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steady-going(firm, solid, stable, fixed)
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sturdy(firm, solid, stable, fixed)
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substantial(firm, solid, stable, fixed)
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sure(firm, solid, stable, fixed)
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unchangeable(firm, solid, stable, fixed)
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unchanging(firm, solid, stable, fixed)
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unfaltering(firm, solid, stable, fixed)
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unfluctuating(firm, solid, stable, fixed)
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uniform(firm, solid, stable, fixed)
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unqualified(firm, solid, stable, fixed)
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unquestioning(firm, solid, stable, fixed)
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unshaken(firm, solid, stable, fixed)
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unswerving(firm, sensible, solid, steady)
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unvarying(firm, solid, stable, fixed)
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unwavering(firm, sensible, solid, steady)
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wholehearted(firm, sensible, solid, steady)
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APASmart Define. (2015). serious-minded thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/serious-minded/thesaurus/synonyms
ChicagoSmart Define. 2015. "serious-minded thesaurus" https://smartdefine.org/serious-minded/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, serious-minded thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/serious-minded/thesaurus/synonyms>.
MLASmart Define. "serious-minded thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/serious-minded/thesaurus/synonyms>