100 entries under vigorous topic. ×

1
demoniac(adjective, strong, moving, lively, active)
1
fibrous(sturdy, robust, brawny, well-built)
1
high-powered(adjective, strong, moving, lively, active)
1
high-spirited(strong, tough, noble, bold)
1
industrious(adjective, strong, moving, lively, active)
1
omnipotent(strong, energetic, powerful, capable)
1
self-reliant(noble, stout, courageous, heroic)
1
snappy(adjective, strong, tough, fit, lively)
1
spry(adjective, strong, moving, lively, active)
1
strengthy(strong, energetic, powerful, capable)
1
strenuous(adjective, strong, lively, active)
1
undismayed(strong, noble, bold, spirited)
1
venturous(strong, tough, noble, bold)
1
wicked(strong, fit, energetic, healthy)
1
wieldy(strong, energetic, powerful, capable)
1
zippy(adjective, strong, tough, fit, lively)
0
all-powerful(strong, energetic, capable, effective)
0
almighty(strong, energetic, powerful, capable)
0
assertive(noble, stout, courageous, heroic)
0
bruising(sturdy, robust, brawny, well-built)
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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>