5
strong(adjective, energetic, lively, determined, active)
5
unflinching(adjective, determined, persevering)
4
resolved
4
undaunted
4
undeviating
3
conscientious
3
continuing(adjective, determined, persevering)
3
dynamic(adjective, strong, moving, energetic, lively)
3
laborious
3
loyal
3
obstinate
3
plugging(adjective, determined, persevering)
3
single-minded
3
stalwart(adjective, strong, moving, lively, active)
3
unconquerable(adjective, perseverance)
2
careful
2
consistent
2
enduring(adjective, calm, quiet, set, gentle)
2
faithful
2
grind(adjective, informal, determined, persevering)
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APASmart Define. (2015). untiring thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/untiring/thesaurus/synonyms
ChicagoSmart Define. 2015. "untiring thesaurus" https://smartdefine.org/untiring/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, untiring thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/untiring/thesaurus/synonyms>.
MLASmart Define. "untiring thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/untiring/thesaurus/synonyms>