222 entries under strong topic. ×

3
indefatigable(adjective, sound, tough, fit)
3
martial(tough, bold, resolute, spirited)
3
reliable(adjective, calm, secure, firm)
3
steady(adjective, calm, sound, tough)
3
stiff(adjective, solid, reliable, robust)
3
unflagging(adjective, sound, tough, fit)
3
untiring(adjective, moving, lively, active)
3
well-built(adjective, calm, person, body)
2
active(adjective, sound, tough, solid)
2
big(adjective, person, body, sound)
2
bound(adjective, intense, deliberate, determined)
2
brisk(adjective, moving, lively, active)
2
enduring(adjective, calm, sound, secure)
2
enterprising(adjective, moving, lively, active)
2
forcible(adjective, sound, tough, solid)
2
great(adjective, person, body, powerful)
2
hard as nails(expression, adjective, idiom, hard)
2
heavy(adjective, person, body, sound)
2
herculean(solid, vigorous, sturdy, robust)
2
hulking(solid, sturdy, robust, burly)
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APASmart Define. (2016). stalwart thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/stalwart/thesaurus/synonyms
ChicagoSmart Define. 2016. "stalwart thesaurus" https://smartdefine.org/stalwart/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, stalwart thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/stalwart/thesaurus/synonyms>.
MLASmart Define. "stalwart thesaurus" 23 March 2016. Web. 30 September 2026. <https://smartdefine.org/stalwart/thesaurus/synonyms>