Synonyms|308Antonyms|47|Broader|4Narrower|0Related|502

49 entries under stable topic. ×

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safe(adjective, strong, secure, steady)
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safe and sound(expression, adjective, idiom, strong, solid)
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screwed(strong, secure, substantial, unmoving)
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solid as a rock(expression, adjective, idiom, strong, solid)
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taut(strong, secure, substantial, unmoving)
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unfluctuating(strong, secure, firm, substantial)
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unmoving(strong, secure, substantial)
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unshakable(strong, secure, substantial, unmoving)
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well-founded(strong, secure)
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APASmart Define. (2016). fastened thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fastened/thesaurus/synonyms
ChicagoSmart Define. 2016. "fastened thesaurus" https://smartdefine.org/fastened/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, fastened thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fastened/thesaurus/synonyms>.
MLASmart Define. "fastened thesaurus" 11 February 2016. Web. 25 September 2026. <https://smartdefine.org/fastened/thesaurus/synonyms>