47 entries under firm topic. ×

2
sound(adjective, strong, secure, solid)
1
durable(strong, secure, true, substantial)
1
fortified(verb, adjective, strong, solid)
1
staunch(adjective, strong, solid, true)
1
sure(adjective, strong, solid, true)
0
adherent(true, fixed, constant, steadfast)
0
ardent(true, fixed, constant, steadfast)
0
constant(true, fixed, steadfast, immovable)
0
defended(adjective, safe, sheltered, protected)
0
faithful(true, fixed, constant, steadfast)
0
guarded(adjective, safe, sheltered, protected)
0
impregnable(adjective, true, fixed, constant)
0
indelible(true, fixed, constant, steadfast)
0
lasting(true, fixed, constant, steadfast)
0
loyal(true, fixed, constant, steadfast)
0
manacled(limited, controlled, constrained, locked)
0
permanent(true, fixed, constant, steadfast)
0
protected(adjective, safe, sheltered, locked)
0
reined in(expression, limited, controlled, constrained)
0
resistant(true, fixed, constant, steadfast)
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APASmart Define. (2016). fastened thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fastened/thesaurus/synonyms
ChicagoSmart Define. 2016. "fastened thesaurus" https://smartdefine.org/fastened/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, fastened thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fastened/thesaurus/synonyms>.
MLASmart Define. "fastened thesaurus" 11 February 2016. Web. 26 September 2026. <https://smartdefine.org/fastened/thesaurus/synonyms>