119 entries under firm topic. ×

1
intent(adjective, determined, usual, regular)
1
inveterate(adjective, determined, usual, regular)
1
located(secure, solid, stiff, rigid)
1
never-failing(adjective, solid, intense, stable)
1
regular(adjective, set, solid, determined)
1
reserved(adjective, cool, solid, detached)
1
self-possessed(adjective, calm, cool, solid)
1
situated(secure, solid, stiff, rigid)
1
solid as a rock(expression, adjective, idiom, strong)
1
sound(adjective, strong, secure, solid)
1
sure(adjective, strong, solid, true)
1
unfluctuating(adjective, strong, secure, solid)
1
uniform(adjective, set, solid, stable)
1
unquestioning(adjective, solid, intense, stable)
0
abiding(adjective, solid, stable, fixed)
0
adherent(true, fixed, constant, steadfast)
0
agreed(adjective, determined, usual, regular)
0
allegiant(adjective, solid, intense, stable)
0
appointed(adjective, determined, usual, regular)
0
arranged(adjective, determined, usual, regular)
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APASmart Define. (2015). immovable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/immovable/thesaurus/synonyms
ChicagoSmart Define. 2015. "immovable thesaurus" https://smartdefine.org/immovable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, immovable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/immovable/thesaurus/synonyms>.
MLASmart Define. "immovable thesaurus" 3 August 2015. Web. 25 September 2026. <https://smartdefine.org/immovable/thesaurus/synonyms>