115 entries under steady topic. ×

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placid(calm, smooth, temperate, composed)
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poised(adjective, firm, solid, stable)
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safe(adjective, firm, solid, stable)
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solid as a rock(expression, adjective, idiom, firm, solid)
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sound(adjective, firm, solid, stable)
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stalwart
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staying put(expression, even)
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stout
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sturdy(adjective, firm, solid, stable)
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substantial(adjective, firm, solid, stable)
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temperate(calm, smooth, composed, unflappable)
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tranquil(adjective, calm, smooth, temperate)
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unexcitable(adjective, calm, smooth, temperate)
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well-built
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well-founded
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APASmart Define. (2015). unchanging thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unchanging/thesaurus/synonyms
ChicagoSmart Define. 2015. "unchanging thesaurus" https://smartdefine.org/unchanging/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unchanging thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unchanging/thesaurus/synonyms>.
MLASmart Define. "unchanging thesaurus" 10 November 2015. Web. 27 September 2026. <https://smartdefine.org/unchanging/thesaurus/synonyms>