328 entries under strong topic. ×

2
powerhouse(fit, solid, vigorous, healthy)
2
rubbery(adjective, hard, flexible, sinewy)
2
seasoned(adjective, hard, sound, fit)
2
snappy(adjective, harsh, energetic, powerful)
2
steeled(noun, adjective, hard, unfeeling)
2
stiff-necked(adjective, mean, hard, firm)
2
sure(adjective, calm, firm, solid)
2
undaunted(adjective, determined, noble, bold)
2
unflagging(adjective, sound, fit, firm)
2
untiring(adjective, moving, lively, active)
2
unvarying(calm, solid, steady, substantial)
2
well-founded(calm, sound, solid, heavy)
2
withstanding(adjective, sturdy)
2
zealous(adjective, clear, severe, smart)
1
Trojan(bold, resolute, spirited, brave)
1
able(sound, fit, heavy, healthy)
1
adventuresome(noble, bold, spirited, brave)
1
adventurous(noble, bold, spirited, brave)
1
anchored(calm, solid, steady, substantial)
1
animated(adjective, moving, energetic, lively)
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APASmart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>