328 entries under strong topic. ×

11
rigorous(adjective, hard, severe, rough)
11
staunch(adjective, calm, clear, sound)
10
unrelenting(adjective, mean, hard, severe)
9
cool(adjective, calm, mean, bad)
9
mighty(adjective, person, body, great)
9
steady(adjective, calm, sound, heavy)
8
athletic(adjective, person, body, sound)
8
austere(adjective, hard, severe, sharp)
8
hard-line(adjective, characteristic, hard, rough)
8
healthy(adjective, fit, condition, intense)
8
resistant(adjective, hard, fit, firm)
8
spunky(adjective, firm, lively, determined)
8
stable(adjective, sound, firm, heavy)
8
toughened(noun, adjective, hard, careless)
8
unsparing(adjective, hard, severe, rough)
8
wicked(adjective, clear, bad, cool)
7
daredevil(noun, bad, temper, noble)
7
dense(adjective, person, set, body)
7
hard-bitten(adjective, hard, continue, rough)
7
hearty(adjective, person, body, sound)
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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>