162 entries under substantial topic. ×

1
unrestricted(great, big, grand, huge)
1
urgent(big, significant, valuable, vital)
1
valuable(adjective, strong, great, big, important)
1
vital(big, significant, valuable, imperative)
0
affluent(adjective, heavy, rich, generous)
0
aplenty(adjective, heavy, rich, generous)
0
apparent(significant, definite, considerable)
0
ascertainable(significant, definite, considerable)
0
clear-cut(significant, definite, considerable)
0
comfortable(open, significant, generous, extensive)
0
critical(big, significant, valuable, vital)
0
crucial(big, significant, valuable, vital)
0
definite(significant, considerable)
0
detectable(significant, considerable)
0
dime a dozen(expression, adjective, idiom, heavy)
0
discernible(significant, definite, considerable)
0
distinguishable(significant, considerable)
0
doozie
0
dynamite(outstanding, significant, impressive, imposing)
0
estimable(significant, definite, considerable)
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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>