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41 entries under substantial topic. ×

1
material(big, significant, valuable, vital)
1
mattering much(expression, big, significant, valuable)
1
meaningful(big, significant, valuable, vital)
1
momentous(big, significant, valuable, vital)
1
necessary(big, significant, valuable, vital)
1
of moment(expression, big, significant, valuable)
1
of note(expression, big, significant, valuable)
1
ponderous(big, significant, valuable, vital)
1
pressing(big, significant, valuable, vital)
1
primary(big, significant, valuable, vital)
1
principal(big, significant, valuable, vital)
1
relevant(big, significant, valuable, vital)
1
salient(big, significant, valuable, vital)
1
serious(big, significant, valuable, vital)
1
significant(big, valuable, vital, imperative)
1
something(big, significant, valuable, vital)
1
standout(big, significant, valuable, vital)
1
urgent(big, significant, valuable, vital)
1
valuable(big, significant, vital, imperative)
1
vital(big, significant, valuable, imperative)
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APASmart Define. (2011). of substance thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/of_substance/thesaurus/synonyms
ChicagoSmart Define. 2011. "of substance thesaurus" https://smartdefine.org/of_substance/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2011, of substance thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/of_substance/thesaurus/synonyms>.
MLASmart Define. "of substance thesaurus" 23 May 2011. Web. 26 September 2026. <https://smartdefine.org/of_substance/thesaurus/synonyms>