8
prosperous(adjective, characteristic, calm, quiet, quality)
8
purposeful(adjective, importance, valuable, main, notable)
8
reliable(adjective, calm, strong, secure, tough)
8
remarkable(adjective, importance, valuable, main, notable)
8
respectable(adjective, reasonable, significant, large, generous)
8
square(adjective, enthusiastic, vigorous, sincere, wholehearted)
8
well(adjective, strong, complete, tough, easy)
8
well-to-do(adjective, calm, quiet, light, smooth)
7
authentic(adjective, good, sound, right, reasonable)
7
big shot(adjective, importance, valuable, main, notable)
7
big time(adjective, importance, main, extremely significant)
7
challenging(adjective, importance, valuable, main, notable)
7
copious(adjective, give, great, big, full)
7
dense(adjective, set, strong, hard, tough)
7
donnish(adjective, importance, valuable, main, notable)
7
exciting(adjective, importance, valuable, main, notable)
7
extensive(adjective, great, big, significant, large)
7
far reaching(adjective, importance, valuable, main, notable)
7
haughty(adjective, importance, valuable, main, notable)
7
high-up(adjective, importance, valuable, main, notable)
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APASmart Define. (2016). substantial thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/substantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "substantial thesaurus" https://smartdefine.org/substantial/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, substantial thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/substantial/thesaurus/synonyms>.
MLASmart Define. "substantial thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/substantial/thesaurus/synonyms>