3
indefatigable(adjective, strong, sound, tough, fit)
3
martial(strong, tough, bold, resolute, spirited)
3
masculine
3
obstinate(adjective, intense, deliberate, determined, resolute)
3
persevering
3
relentless
3
reliable(adjective, calm, strong, secure, firm)
3
robustious
3
rude
3
standby(noun, reserve, substitute, fallback)
3
steady(adjective, calm, strong, sound, tough)
3
stiff(adjective, strong, solid, reliable, robust)
3
strong-willed(adjective, intense, deliberate, determined, vigorous)
3
sustainer(noun, support, stay, rock, fan)
3
sympathizer(noun, supporter, fan, follower)
3
unbending
3
unflagging(adjective, strong, sound, tough, fit)
3
untiring(adjective, strong, moving, lively, active)
3
upstanding(adjective, honest, pure, straight, real)
3
well-built(adjective, calm, person, body, strong)
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APASmart Define. (2016). stalwart thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/stalwart/thesaurus/synonyms
ChicagoSmart Define. 2016. "stalwart thesaurus" https://smartdefine.org/stalwart/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, stalwart thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/stalwart/thesaurus/synonyms>.
MLASmart Define. "stalwart thesaurus" 23 March 2016. Web. 27 September 2026. <https://smartdefine.org/stalwart/thesaurus/synonyms>