162 entries under substantial topic. ×

2
obvious(significant, definite, considerable)
2
overflowing(adjective, heavy, rich, generous)
2
plenteous(adjective, great, heavy, rich)
2
primary(adjective, big, significant, valuable)
2
principal(adjective, big, significant, valuable)
2
serious(big, significant, valuable, vital)
1
decisive(big, significant, valuable, vital)
1
determining(big, significant, valuable, vital)
1
distinguished(adjective, famous, significant, familiar, noble)
1
earnest(big, significant, valuable, vital)
1
essential(big, significant, valuable, vital)
1
exceptional(great, big, significant, valuable)
1
exigent(big, significant, valuable, vital)
1
fab(outstanding, significant, exciting, impressive)
1
far-reaching(adjective, spread, big, grand)
1
fleshy(adjective, big, heavy, awkward)
1
front-page(big, significant, valuable, vital)
1
good-sized(significant, definite, generous, considerable)
1
imperative(big, significant, valuable, vital)
1
importunate(big, significant, valuable, vital)
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APASmart Define. (2016). large thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/large/thesaurus/synonyms
ChicagoSmart Define. 2016. "large thesaurus" https://smartdefine.org/large/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, large thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/large/thesaurus/synonyms>.
MLASmart Define. "large thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/large/thesaurus/synonyms>