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

51 entries under strong topic. ×

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petrified(secure, substantial, stable, unmoving)
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robust(secure, substantial, stable, unmoving)
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safe(adjective, secure, steady, stable)
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safe and sound(expression, adjective, idiom, solid)
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screwed(secure, substantial, stable, unmoving)
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solid as a rock(expression, adjective, idiom, solid)
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taut(secure, substantial, stable, unmoving)
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unfluctuating(secure, firm, substantial, stable)
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unmoving(secure, substantial, stable)
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unshakable(secure, substantial, stable, unmoving)
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well-founded(secure, stable)
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APASmart Define. (2016). fastened thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/fastened/thesaurus/synonyms
ChicagoSmart Define. 2016. "fastened thesaurus" https://smartdefine.org/fastened/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, fastened thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/fastened/thesaurus/synonyms>.
MLASmart Define. "fastened thesaurus" 11 February 2016. Web. 27 September 2026. <https://smartdefine.org/fastened/thesaurus/synonyms>