96 entries under important topic. ×

10
principal(adjective, body, material, big)
10
significant(adjective, big, original, substantial)
10
wanted(adjective, capital, essential, vital)
8
chief(adjective, big, significant, substantial)
8
critical(adjective, big, significant, substantial)
7
prime(adjective, body, material, significant)
6
decisive(adjective, substantial, valuable, essential)
6
momentous(adjective, substantial, valuable, essential)
6
paramount(adjective, significant, original, substantial)
5
central(adjective, significant, original, essential)
5
elementary(adjective, easy, significant, original)
5
integral(adjective, body, material, significant)
5
necessitous(adjective, capital, essential, vital)
5
primary(adjective, body, material, big)
4
basal(adjective, body, material, significant)
4
of the essence(expression, adjective, idiom, essential)
4
underlying(adjective, significant, original, essential)
3
bottom-line(adjective, significant, original, essential)
3
called-for(adjective, serious, essential, critical)
3
consequential(adjective, prominent, exalted)
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APASmart Define. (2015). necessary thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms
ChicagoSmart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, necessary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>.
MLASmart Define. "necessary thesaurus" 2 November 2015. Web. 23 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms>