Synonyms|437Antonyms|116|Broader|0Narrower|0Related|368

101 entries under stable topic. ×

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changeless(adjective, firm, solid, fixed)
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compos mentis(expression, sensible, rational, healthy)
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durable(adjective, firm, solid, fixed)
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enduring(adjective, firm, solid, fixed)
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fair-minded(sensible, rational, healthy, sober)
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fast(adjective, firm, sensible, solid, steady)
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fit(sensible, rational, healthy, sober)
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fixed(adjective, firm, solid, sturdy)
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immovable(adjective, firm, solid, fixed)
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intense(adjective, firm, sensible, solid, steady)
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liege(adjective, firm, sensible, solid, steady)
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never-failing(adjective, firm, solid, fixed)
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oriented(sensible, rational, healthy, sober)
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patterned(adjective, firm, solid, fixed)
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regular(adjective, firm, solid, fixed)
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safe(adjective, firm, solid, fixed)
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serious-minded(adjective, firm, sensible, solid, steady)
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set(adjective, firm, solid, fixed)
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set in stone(expression, adjective, idiom, firm, solid)
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settled(adjective, firm, sensible, solid, steady)
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ChicagoSmart Define. 2015. "levelheaded thesaurus" https://smartdefine.org/levelheaded/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, levelheaded thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/levelheaded/thesaurus/synonyms>.
MLASmart Define. "levelheaded thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/levelheaded/thesaurus/synonyms>