Synonyms|80Antonyms|39|Broader|1Narrower|0Related|668

66 entries under firm topic. ×

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set in stone(expression, adjective, idiom, solid)
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settled(adjective, sensible, solid, steady)
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single-minded(adjective, sensible, solid, steady)
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solid(adjective, stable, fixed, sturdy)
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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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stable(adjective, solid, fixed, sturdy)
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staunch(adjective, sensible, solid, steady)
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steadfast(adjective, sensible, solid, steady)
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steady-going(adjective, solid, stable, fixed)
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sturdy(adjective, solid, stable, fixed)
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substantial(adjective, solid, stable, fixed)
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sure(adjective, solid, stable, fixed)
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unchangeable(adjective, solid, stable, fixed)
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unchanging(adjective, solid, stable, fixed)
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unfaltering(adjective, solid, stable, fixed)
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unfluctuating(adjective, solid, stable, fixed)
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uniform(adjective, solid, stable, fixed)
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unqualified(adjective, solid, stable, fixed)
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APASmart Define. (2015). serious-minded thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/serious-minded/thesaurus/synonyms
ChicagoSmart Define. 2015. "serious-minded thesaurus" https://smartdefine.org/serious-minded/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, serious-minded thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/serious-minded/thesaurus/synonyms>.
MLASmart Define. "serious-minded thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/serious-minded/thesaurus/synonyms>