153 entries under substantial topic. ×

10
unwavering(adjective, calm, strong, secure, firm)
10
unyielding(adjective, set, strong, hard, sound)
10
well-built(adjective, calm, person, body, strong)
9
consolidated(adjective, state, close, set, hard)
9
constant(verb, adjective, calm, good, strong)
9
palpable(adjective, physical, material, actual)
9
sensible(adjective, reasonable, firm, honest, physical)
9
uniform(adjective, calm, strong, simple, firm)
9
vigorous(adjective, strong, sound, complete, tough)
8
hardy(adjective, person, body, strong, sound)
8
packed(adjective, close, set, strong, hard)
7
weighty(adjective, good, clear, sound, right)
6
bodily(adjective, physical, material, actual)
6
corporeal(adjective, physical, material, true)
6
forceful(adjective, clear, strong, sound, tough)
6
healthy(adjective, strong, hard, sound, complete)
6
important(adjective, extraordinary, powerful, outstanding, significant)
6
mighty(adjective, person, body, strong, sound)
6
muscular(adjective, person, body, strong, sound)
6
regular(verb, adjective, sound, complete, correct)
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APASmart Define. (2016). solid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>