312 entries under adjective topic. ×

3
definite(clear, complete, firm, total)
3
immovable(firm, solid, stable, fixed)
3
industrious
3
inexhaustible(strong, firm, energetic, determined)
3
inflexible(strong, firm, certain, limited)
3
persuaded(clear, certain, definite, unquestionable)
3
regular(firm, solid, steady, stable)
3
rigid(intense, resolute, persistent, unqualified)
3
solid(firm, steady, stable, fixed)
3
strong(firm, determined, steady, bold)
3
strong-willed(firm, intense, deliberate, determined)
3
trusty(reliable, steadfast, loyal, faithful)
3
unblinking(certain, limited, definite, inflexible)
3
unremitting(strong, firm, energetic, determined)
3
unshrinking(bold, unconcerned, brave, steadfast)
3
unsleeping
3
vigorous
2
absolute(complete, total, prompt, big)
2
assertive
2
bent on(expression, serious, resolute, persistent)
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APASmart Define. (2015). unfaltering thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unfaltering/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfaltering thesaurus" https://smartdefine.org/unfaltering/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unfaltering thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unfaltering/thesaurus/synonyms>.
MLASmart Define. "unfaltering thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/unfaltering/thesaurus/synonyms>