140 entries under determined topic. ×

10
undaunted(adjective, bold, courage, brave)
9
fixed(adjective, strong, flat, firm, certain)
9
inflexible(adjective, strong, flat, firm, harsh)
9
obstinate(adjective, strong, firm, resolution)
9
persevering(adjective, strong, flat, firm, certain)
8
dogged(adjective, strong, firm, harsh, energetic)
8
indefatigable(adjective, set, strong, firm)
8
loyal(adjective, strong, firm, bold)
8
stubborn(adjective, strong, firm, fixed)
8
unbending(adjective, strong, flat, firm, harsh)
7
implacable(adjective, mean, severe, harsh, cruel)
7
inexorable(adjective, mean, severe, harsh, cruel)
7
set(adjective, strong, flat, firm, certain)
7
stable(adjective, strong, flat, definite)
7
tireless(adjective, set, strong, firm, energetic)
7
valiant(adjective, firm, ready, bold)
6
faithful(adjective, strong, firm, bold)
6
single-minded(adjective, harsh, cruel, fierce)
6
sure(adjective, strong, flat, certain)
6
true(adjective, strong, flat, firm, certain)
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APASmart Define. (2015). unflinching thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unflinching/thesaurus/synonyms
ChicagoSmart Define. 2015. "unflinching thesaurus" https://smartdefine.org/unflinching/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unflinching thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unflinching/thesaurus/synonyms>.
MLASmart Define. "unflinching thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/unflinching/thesaurus/synonyms>