80 entries under tough topic. ×

2
muscular(strong, fit, healthy, well)
2
nonporous(hard, solid, rigid, inflexible)
2
rigid(adjective, set, strong, hard, complete)
2
set(verb, adjective, strong, hard)
2
solidified(verb, adjective, set, hard)
2
substantial(adjective, set, strong, hard)
2
unyielding(adjective, set, hard, firm)
1
able-bodied(strong, fit, healthy, well)
1
athletic(strong, fit, healthy, well)
1
boisterous(strong, fit, intense, healthy)
1
booming(strong, fit, healthy, well)
1
brawny(strong, fit, healthy, well)
1
built(strong, fit, healthy, well)
1
close-grained(adjective, set, hard, firm)
1
congealed(verb, adjective, set, hard)
1
fit(adjective, strong, vigorous, healthy)
1
fit as fiddle(expression, idiom, strong, fit)
1
flourishing(strong, fit, healthy, well)
1
hale(strong, fit, healthy, well)
1
hardened(verb, adjective, set, strong, hard)
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APASmart Define. (2015). concentrated thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/concentrated/thesaurus/synonyms
ChicagoSmart Define. 2015. "concentrated thesaurus" https://smartdefine.org/concentrated/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, concentrated thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/concentrated/thesaurus/synonyms>.
MLASmart Define. "concentrated thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/concentrated/thesaurus/synonyms>