58 entries under unwavering topic. ×

10
indomitable(adjective, strong, tough, firm, difficult)
10
purposeful(adjective, strong, firm, determined, serious)
10
unflinching(adjective, strong, flat, firm, determined)
9
fast(adjective, strong, free, secure, tough)
8
single-minded(adjective, tough, intense, deliberate, determined)
7
constant(adjective, strong, tough, flat, firm)
7
decided(adjective, firm, intense, deliberate, determined)
7
secure(adjective, strong, sound, free, tough)
7
steady(adjective, strong, sound, secure, tough)
7
strong-minded(adjective, firm, determined, fixed, serious)
7
tight(adjective, close, strong, hard, free)
6
durable(adjective, strong, sound, secure, tough)
6
earnest(adjective, serious, resolute, persistent)
6
unbending(adjective, clear, strong, tough, severe)
5
decisive(adjective, determined, serious, resolute, persistent)
5
stable(adjective, strong, sound, secure, tough)
4
serious(adjective, strong, firm, determined, resolute)
4
solid(adjective, strong, sound, secure, tough)
3
intent(adjective, strong, flat, intense, deliberate)
3
pat(adjective, difficult, determined, serious, resolute)
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APASmart Define. (2015). tenacious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, tenacious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>.
MLASmart Define. "tenacious thesaurus" 6 November 2015. Web. 28 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms>