328 entries under strong topic. ×

7
inexorable(adjective, mean, hard, firm)
7
plucky(adjective, determined, noble, bold)
7
set(verb, adjective, calm, hard)
7
unwavering(adjective, calm, secure, firm)
6
authoritarian(noun, adjective, hard, severe)
6
constant(adjective, calm, secure, firm)
6
enduring(adjective, calm, sound, fit)
6
fearless(adjective, bad, cool, determined)
6
fit(adjective, fresh, healthy, well)
6
grim(adjective, hard, severe, firm)
6
hale(adjective, sound, fit, firm)
6
implacable(adjective, mean, hard, firm)
6
inured(noun, adjective, hard, sound)
6
lusty(adjective, fit, firm, solid)
6
mettlesome(adjective, intense, energetic, powerful)
6
virile(adjective, fit, fresh, well)
6
vital(adjective, intense, energetic, important)
6
wiry(adjective, thin, narrow, slim)
5
able-bodied(adjective, person, body, fresh)
5
beefy(adjective, person, body, brawny)
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APASmart Define. (2016). tough thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>