Synonyms|1.4kAntonyms|650|Broader|15Narrower|0Related|2.9k

89 entries under important topic. ×

2
super(great, big, significant, large)
2
superabundant(adjective, significant, large, ample)
2
to the max(expression, idiom, big, significant)
1
big-deal(adjective, significant, large, ample)
1
chips are down(expression, idiom, significant, historic)
1
decisive(big, significant, valuable, vital)
1
distinguished(big, significant, large)
1
doozie(big, significant, large)
1
earth-shattering(significant, historic)
1
epochal(significant, historic)
1
far-reaching(big, significant, valuable, vital)
1
forcible(adjective, strong, sound, tough, solid)
1
heavy number(expression, significant, historic)
1
important serious(expression, significant, historic)
1
memorable(significant, historic)
1
mondo(big, significant, large)
1
of moment(expression, big, significant, valuable)
1
renowned(big, significant, large)
1
solid gold(expression, big, significant, large)
1
something(big, significant, large, valuable)
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APASmart Define. (2016). substantial thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/substantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "substantial thesaurus" https://smartdefine.org/substantial/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, substantial thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/substantial/thesaurus/synonyms>.
MLASmart Define. "substantial thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/substantial/thesaurus/synonyms>