89 entries under important topic. ×

7
necessary(adjective, significant, original, essential)
7
crucial(adjective, significant, original, essential)
7
indispensable(adjective, significant, original, essential)
7
overriding(adjective, significant, serious, prime)
7
pivotal(adjective, significant, serious, basic)
7
premier(adjective, lead, head, beginning)
7
radical(adjective, importance, significant, original)
6
highest(adjective, heavy, outstanding, prominent)
6
organic(adjective, significant, original, basic)
6
overruling(adjective, importance, serious, essential)
6
preeminent(adjective, outstanding, essential, prominent)
6
significant(adjective, original, essential, critical)
5
elementary(adjective, head, significant, beginning)
5
rudimentary(adjective, head, significant, beginning)
5
top(adjective, quality, tough, superior, heavy)
4
basal(adjective, lead, head, significant)
4
ruling(adjective, significant, original, serious)
3
constitutive(adjective, essential, critical, basic)
3
critical(adjective, original, essential, basic)
3
elemental(adjective, significant, original, essential)
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APASmart Define. (2015). cardinal thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms
ChicagoSmart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, cardinal thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>.
MLASmart Define. "cardinal thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms>