Synonyms|317Antonyms|83|Broader|7Narrower|12Related|441
7
pertinacious(adjective, strong, firm, energetic, determined)
7
relentless(adjective, resolute)
7
unflinching(adjective, set, strong, firm, energetic)
6
bold(adjective, resolute, tenacious)
6
business-minded
6
conscientious(adjective, work, strain, firmness, labour)
6
dedicated(adjective, strong, firm, determined, steady)
6
devoted(adjective, strong, firm, determined, steady)
6
enterprising(adjective, strong, moving, energetic, lively)
6
faithful(adjective, resolute, tenacious)
6
indomitable(adjective, strong, firm, determined, steady)
6
stalwart(adjective, strong, moving, energetic, lively)
6
thorough(adjective, resolute)
6
undaunted(adjective, tenacious)
6
undeviating
6
weariless(adjective, continue, tired)
6
zealous(adjective, resolute)
5
earnest(adjective, resolute)
5
enduring(adjective, tenacious)
5
insistent(adjective, resolute, tenacious)
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APASmart Define. (2016). tireless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tireless/thesaurus/synonyms
ChicagoSmart Define. 2016. "tireless thesaurus" https://smartdefine.org/tireless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, tireless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tireless/thesaurus/synonyms>.
MLASmart Define. "tireless thesaurus" 19 February 2016. Web. 24 September 2026. <https://smartdefine.org/tireless/thesaurus/synonyms>