93 entries under solid topic. ×

3
steady(adjective, calm, strong, sound, tough)
3
stiff(adjective, strong, reliable, robust)
3
unflagging(adjective, strong, sound, tough, fit)
3
well-built(adjective, calm, person, body, strong)
2
active(adjective, strong, sound, tough)
2
big(adjective, person, body, strong, sound)
2
enduring(adjective, calm, strong, sound, secure)
2
forcible(adjective, strong, sound, tough)
2
hard as nails(expression, adjective, idiom, strong, hard)
2
heavy(adjective, person, body, strong, sound)
2
herculean(strong, vigorous, sturdy, robust)
2
hulking(strong, sturdy, robust, burly)
2
inflexible(adjective, strong, hard, tough, firm)
2
sure(adjective, calm, strong, tough, firm)
1
abiding(calm, strong, steady, substantial)
1
able(adjective, strong, sound, tough, fit)
1
anchored(calm, strong, steady, substantial)
1
balanced(calm, strong, steady, substantial)
1
brick-wall(adjective, calm, strong, steady)
1
calm(strong, steady, substantial, even)
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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>