69 entries under substantial topic. ×

4
primary(adjective, big, important, significant)
3
heavyweight(adjective, great, big, heavy, important)
3
meaningful(adjective, great, important, significant)
2
considerable(adjective, big, heavy, important, significant)
2
determining(big, important, significant, serious)
2
material(adjective, big, heavy, important, significant)
2
salient(adjective, sharp, big, important, significant)
1
big(heavy, important, significant, valuable)
1
chief(adjective, great, big, heavy, significant)
1
earnest(big, heavy, significant, valuable)
1
exceptional(great, big, heavy, significant)
1
far-reaching(big, important, significant, valuable)
1
front-page(great, big, heavy, significant)
1
importunate(adjective, hard, tough, difficult, big)
1
of moment(expression, big, important, significant)
1
of note(expression, big, significant, valuable)
1
of substance(expression, big, significant, valuable)
1
ponderous(big, heavy, significant, valuable)
1
relevant(adjective, big, significant, valuable)
1
something(big, outstanding, significant, valuable)
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APASmart Define. (2016). critical thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/critical/thesaurus/synonyms
ChicagoSmart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, critical thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>.
MLASmart Define. "critical thesaurus" 16 February 2016. Web. 25 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms>