92 entries under large topic. ×

2
super(adjective, good, bad, great, extraordinary)
2
valuable(adjective, big, significant, substantial)
1
abundant(significant, substantial, considerable)
1
doozie(big, important, outstanding, significant, substantial)
1
dynamite(big, important, significant, substantial)
1
exigent(adjective, big, heavy, significant, substantial)
1
extensive(big, significant, substantial, valuable)
1
fab(big, important, significant, substantial)
1
fat(big, heavy, important, significant, substantial)
1
goodly(significant, substantial, considerable)
1
massive(intense, big, heavy, powerful, significant)
1
mondo(big, important, significant, substantial)
1
noticeable(adjective, great, solid, extraordinary, unusual)
1
plentiful(significant, substantial, considerable)
1
renowned(big, important, outstanding, significant, substantial)
1
sizable(significant, substantial, considerable)
1
solid(extraordinary, unusual, exceptional, outstanding, significant)
1
solid gold(expression, big, important, significant, substantial)
1
something(big, important, significant, substantial)
1
something else(expression, big, important, substantial)
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APASmart Define. (2016). momentous thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/momentous/thesaurus/synonyms
ChicagoSmart Define. 2016. "momentous thesaurus" https://smartdefine.org/momentous/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, momentous thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/momentous/thesaurus/synonyms>.
MLASmart Define. "momentous thesaurus" 1 April 2016. Web. 1 October 2026. <https://smartdefine.org/momentous/thesaurus/synonyms>