172 entries under adjective topic. ×

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relentless(persistent, continuous, endless, continual)
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reserved(firm, solid, stable, fixed)
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sedate(firm, solid, stable, fixed)
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self-possessed(firm, solid, stable, fixed)
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sensible(firm, solid, stable, fixed)
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serene(calm, smooth, firm, solid)
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serious-minded(firm, solid, stable, fixed)
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single-minded(firm, solid, stable, fixed)
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sober(firm, solid, stable, fixed)
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stagnant(still, passive, motionless, stationary)
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staid(firm, solid, stable, fixed)
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still(passive, motionless, stationary, changeless)
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stopped(still, passive, motionless, stationary)
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systematic(calm, smooth, steady, temperate)
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temperate(calm, smooth, steady, composed)
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tranquil(calm, smooth, steady, temperate)
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unceasing(persistent, continuous, endless, relentless)
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unchanged(fixed, static, unchangeable)
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unending(persistent, continuous, endless, relentless)
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unexcitable(calm, smooth, steady, temperate)
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APASmart Define. (2015). stabile thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stabile/thesaurus/synonyms
ChicagoSmart Define. 2015. "stabile thesaurus" https://smartdefine.org/stabile/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, stabile thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stabile/thesaurus/synonyms>.
MLASmart Define. "stabile thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/stabile/thesaurus/synonyms>