Synonyms|428Antonyms|86|Broader|9Narrower|0Related|95
3
abiding(adjective, persevering)
3
active(adjective, strong, difficult, energetic, lively)
3
courageous(adjective, tenacious)
3
dauntless(adjective, tenacious)
3
dependable(adjective, certain, constant, reliable, trustworthy)
3
hard(adjective, tenacious)
3
inflexible
3
stable
3
stalwart(adjective, strong, sound, tough, fit)
3
unabated
3
unceasing(adjective, strong, firm, determined, steady)
3
unchanging
3
unshaken(adjective, strong, firm, solid, determined)
2
bulldogged(adjective, tenacious)
2
bullheaded(adjective, tenacious)
2
consistent
2
continual(adjective, constant, incessant)
2
continuing(adjective, strong, firm, certain, determined)
2
fast(adjective, complete, total, whole, trustworthy)
2
foolproof
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APASmart Define. (2015). unflagging thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unflagging/thesaurus/synonyms
ChicagoSmart Define. 2015. "unflagging thesaurus" https://smartdefine.org/unflagging/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unflagging thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unflagging/thesaurus/synonyms>.
MLASmart Define. "unflagging thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/unflagging/thesaurus/synonyms>