395 entries under adjective topic. ×

8
stout(strong, sound, tough, fit)
8
unshakable(strong, tough, firm, determined)
8
vigorous(strong, sound, tough, fit)
8
viscid(secure, tough, tacky, sticky)
7
bullheaded(tough, firm, difficult, resist)
7
cohesive(strong, unyielding, coherence)
7
constant(strong, tough, flat, firm)
7
decided(firm, intense, deliberate, determined)
7
enduring(strong, sound, tough, fit)
7
hard(strong, determined, fixed, persistent)
7
hearty(strong, sound, tough, fit)
7
plucky(strong, tough, determined, bold)
7
secure(strong, sound, free, tough)
7
steady(strong, sound, secure, tough)
7
strong-minded(firm, determined, fixed, serious)
7
tight(close, strong, hard, free)
7
true(strong, firm, definite, fixed)
7
unbendable(determined, resolute, obstinate, uncompromising)
6
bold(strong, tough, firm, vigorous)
6
clingy(precise, thorough, meticulous, sticky)
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APASmart Define. (2015). tenacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, tenacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>.
MLASmart Define. "tenacious thesaurus" 6 November 2015. Web. 24 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms>