45 entries under tenacious topic. ×

27
courageous(adjective, strong, determined, vigorous, noble)
20
determined(adjective, strong, hard, tough, firm)
20
brave(adjective, strong, tough, determined, vigorous)
19
resolute(adjective, strong, tough, firm, determined)
15
dogged(adjective, strong, firm, determined, steady)
15
dauntless(adjective, strong, tough, determined, vigorous)
14
stubborn(adjective, strong, hard, tough, difficult)
13
staunch(adjective, strong, firm, determined, steady)
13
obstinate(adjective, violent, determined, resolution, resolute)
13
steadfast(adjective, strong, determined, vigorous, noble)
12
strong(adjective, hard, great, tough, firm)
12
tenacious(adjective, strong, tough, firm, difficult)
11
bold(adjective, strong, resolute, spirited, brave)
9
indefatigable(adjective, strong, firm, determined, steady)
9
persistent(adjective, strong, firm, determined, steady)
9
unwavering(adjective, strong, firm, determined, steady)
8
undaunted(adjective, strong, bold, resolute, spirited)
7
plucky(adjective, strong, bold, resolute, spirited)
7
stiff(adjective, hard, rigid, inflexible, strict)
6
persevering(adjective, strong, firm, determined, steady)
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APASmart Define. (2015). indomitable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/indomitable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indomitable thesaurus" https://smartdefine.org/indomitable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, indomitable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/indomitable/thesaurus/synonyms>.
MLASmart Define. "indomitable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/indomitable/thesaurus/synonyms>