Synonyms|55Antonyms|0|Broader|0Narrower|0Related|0
1
serious(big, significant, substantial, valuable, vital)
1
signal(significant, vital, imperative)
1
significant(big, substantial, valuable, vital, imperative)
1
something(big, significant, substantial, valuable, vital)
1
standout(big, significant, substantial, valuable, vital)
1
substantial(big, significant, valuable, vital, imperative)
1
urgent(big, significant, substantial, valuable, vital)
1
valuable(big, significant, substantial, vital, imperative)
1
vital(big, significant, substantial, valuable, imperative)
1
weighty(big, significant, substantial, valuable, vital)
0
central(significant, vital, imperative)
0
great(significant, vital, imperative)
0
key(significant, vital, imperative)
0
main(significant, vital, imperative)
0
newsworthy(adjective, important)
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APASmart Define. (2011). of substance thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/of_substance/thesaurus/synonyms
ChicagoSmart Define. 2011. "of substance thesaurus" https://smartdefine.org/of_substance/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2011, of substance thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/of_substance/thesaurus/synonyms>.
MLASmart Define. "of substance thesaurus" 23 May 2011. Web. 25 September 2026. <https://smartdefine.org/of_substance/thesaurus/synonyms>