575 entries under adjective topic. ×

7
newsworthy(importance, valuable, main, notable)
7
positive(material, certain, real, genuine)
7
secure(calm, quiet, strong, hard)
7
stalwart(calm, strong, sound, secure)
7
telling(strong, sound, reasonable, important)
7
vigorous(strong, sound, complete, tough)
7
wealthy(easy, heavy, rich, large)
6
easy(calm, light, simple, warm)
6
extraordinary(important, significant, large, remarkable)
6
factual(solid, physical, material, certain)
6
full(great, big, heavy, enthusiastic)
6
hardy(strong, sound, tough, fit)
6
honest(physical, material, enthusiastic, vigorous)
6
phenomenal(body, extraordinary, physical, material)
6
rugged(strong, sound, fit, solid)
6
snug(calm, quiet, light, smooth)
6
sure(calm, strong, secure, continue)
6
thick(close, set, strong, hard)
6
well-founded(calm, good, strong, sound)
6
worthwhile(good, big, important, significant)
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APASmart Define. (2016). substantial thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/substantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "substantial thesaurus" https://smartdefine.org/substantial/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, substantial thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/substantial/thesaurus/synonyms>.
MLASmart Define. "substantial thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/substantial/thesaurus/synonyms>