226 entries under firm topic. ×

6
regular(adjective, dull, solid, determined)
6
set in stone(expression, adjective, idiom, calm, strong)
6
unhesitating(adjective, complete, certain, serious)
6
unshaken(adjective, clear, strong, flat)
6
unvarying(adjective, calm, strong, secure)
6
valiant(adjective, strong, noble, bold)
5
adamantine(adjective, tough, determined, resolute)
5
allegiant(adjective, close, correct, continue, keen)
5
committed(adjective, kind, keen, warm)
5
implacable(adjective, tough, determined, resolute)
5
iron(adjective, strong, tough, determined)
5
mulish(adjective, tough, determined, resolute)
5
pat(adjective, solid, determined, usual)
5
persisting(adjective, strong, tough, determined)
5
strict(adjective, close, strong, correct, flat)
5
unqualified(adjective, strong, complete, flat)
5
wholehearted(adjective, complete, keen, total)
4
balanced(adjective, calm, strong, secure, easy)
4
never-failing(adjective, strong, complete, flat)
4
uniform(adjective, calm, strong, secure)
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APASmart Define. (2016). steadfast thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/steadfast/thesaurus/synonyms
ChicagoSmart Define. 2016. "steadfast thesaurus" https://smartdefine.org/steadfast/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, steadfast thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/steadfast/thesaurus/synonyms>.
MLASmart Define. "steadfast thesaurus" 11 March 2016. Web. 26 September 2026. <https://smartdefine.org/steadfast/thesaurus/synonyms>