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immovable(firm, fixed, constant, steadfast)
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impregnable(firm, fixed, constant, steadfast)
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indelible(firm, fixed, constant, steadfast)
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inextricable(firm, fixed, constant, steadfast)
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lasting(firm, fixed, constant, steadfast)
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permanent(firm, fixed, constant, steadfast)
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resistant(firm, fixed, constant, steadfast)
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resolute(firm, fixed, constant, steadfast)
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secure(firm, fixed, constant, steadfast)
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set(firm, fixed, constant, steadfast)
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sound(firm, fixed, constant, steadfast)
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stable(firm, fixed, constant, steadfast)
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stuck(firm, fixed, constant, steadfast)
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sure(firm, fixed, constant, steadfast)
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tight(firm, fixed, constant, steadfast)
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unwavering(firm, fixed, constant, steadfast)
<123>
10 years ago|10k views|share |citing 
APASmart Define. (2016). adherent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/adherent/thesaurus/synonyms
ChicagoSmart Define. 2016. "adherent thesaurus" https://smartdefine.org/adherent/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, adherent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/adherent/thesaurus/synonyms>.
MLASmart Define. "adherent thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/adherent/thesaurus/synonyms>