575 entries under adjective topic. ×

17
influential(importance, powerful, valuable, main)
16
settled(strong, strain, firm, solid)
16
good(great, sound, right, reasonable)
16
grand(importance, valuable, main, notable)
16
hearty(strong, sound, complete, tough)
16
impressive(importance, valuable, main, notable)
16
meaningful(strong, importance, big, heavy)
15
corporeal(body, solid, physical, material)
15
key(importance, important, valuable, main)
15
massive(hard, great, big, heavy)
14
goodly(great, reasonable, big, important)
14
hefty(strong, hard, great, tough)
14
sizable(great, reasonable, fair, big)
13
rich(good, easy, large, generous)
13
vital(importance, important, valuable, main)
12
powerful(good, strong, sound, tough)
12
solemn(importance, valuable, main, notable)
12
tidy(great, reasonable, big, important)
12
valid(sound, right, reasonable, solid)
11
bulky(great, big, heavy, important)
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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>