Synonyms|862Antonyms|116|Broader|10Narrower|8Related|256

134 entries under firm topic. ×

8
hardheaded(adjective, tough, resist, determined)
8
stout(adjective, strong, sound, tough, fit)
8
unshakable(adjective, strong, tough, determined)
7
bullheaded(adjective, tough, difficult, resist)
7
constant(adjective, strong, tough, flat)
7
decided(adjective, intense, deliberate, determined)
7
enduring(adjective, strong, sound, tough, fit)
7
secure(adjective, strong, sound, free, tough)
7
steady(adjective, strong, sound, secure, tough)
7
strong-minded(adjective, determined, fixed, serious)
7
tight(adjective, close, strong, hard, free)
7
true(adjective, strong, definite, fixed)
6
bold(adjective, strong, tough, vigorous)
6
devoted(adjective, strong, determined, steady)
6
durable(adjective, strong, sound, secure, tough)
6
faithful(adjective, true, fixed, resolute)
6
intractable(adjective, tough, difficult, persistent)
6
persisting(adjective, strong, determined, resolute)
6
stiff-necked(adjective, tough, resist, unreasonable)
6
unbending(adjective, clear, strong, tough, severe)
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ChicagoSmart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, tenacious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>.
MLASmart Define. "tenacious thesaurus" 6 November 2015. Web. 25 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms>