64 entries under firm topic. ×

3
purposeful(adjective, strong, serious, resolute)
2
continuing(adjective, strong, determined, steady)
2
dead set on(expression, adjective, idiom, strong, flat)
2
patient(adjective, strong, energetic, determined)
2
plodding(adjective, strong, determined, steady)
2
plugging(adjective, strong, determined, steady)
2
serious(adjective, strong, determined, resolute)
2
unfailing(adjective, set, strong, determined)
2
unremitting(adjective, strong, energetic, determined)
2
unwearied(adjective, strong, energetic, determined)
1
continued(adjective, strong, determined, steady)
1
fireball(adjective, strong, determined, steady)
1
go-go(adjective, strong, determined, steady)
1
incessant(adjective, strong, determined, steady)
1
inexhaustible(adjective, strong, energetic, determined)
1
settled(adjective, strong, flat, certain)
1
strong(adjective, flat, determined, steady)
1
unceasing(adjective, strong, determined, steady)
1
undeterred(adjective, strong, determined, steady)
1
unquestioning(adjective, set, intense, resolute)
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APASmart Define. (2015). unflinching thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unflinching/thesaurus/synonyms
ChicagoSmart Define. 2015. "unflinching thesaurus" https://smartdefine.org/unflinching/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unflinching thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unflinching/thesaurus/synonyms>.
MLASmart Define. "unflinching thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/unflinching/thesaurus/synonyms>