Synonyms|659Antonyms|114|Broader|10Narrower|15Related|819

108 entries under substantial topic. ×

2
of moment(expression, adjective, big, important)
2
paramount(adjective, good, big, important, significant)
2
sedate(big, heavy)
2
sober(adjective, energetic, big, heavy)
2
staid(big, heavy)
2
standout(adjective, bad, great, excellent, extraordinary)
2
super(adjective, good, bad, great, extraordinary)
2
valuable(adjective, big, significant, large)
1
abundant(significant, large, considerable)
1
cardinal(adjective, important, significant, serious)
1
determining(big, significant, valuable, vital)
1
doozie(big, important, outstanding, significant)
1
dynamite(big, important, significant, large)
1
exigent(adjective, big, heavy, significant)
1
extensive(big, significant, large, valuable)
1
fab(big, important, significant, large)
1
fat(big, heavy, important, significant)
1
forcible(strong, big, heavy, powerful)
1
front-page(big, important, significant, valuable)
1
goodly(significant, large, considerable)
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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>