138 entries under important topic. ×

6
compelling(adjective, energetic, lively, active)
6
compulsory(adjective, set, significant, essential)
6
needful(adjective, set, significant, original)
6
radical(adjective, great, importance, significant)
6
strenuous(adjective, strong, tough, intense, energetic)
6
tough(adjective, strong, intense, energetic)
5
capital(adjective, top, importance, serious)
5
exigent(adjective, big, heavy, significant)
5
prerequisite(adjective, set, right, significant)
5
underlying(adjective, significant, original, essential)
4
constitutional(adjective, body, material, significant)
4
obligatory(adjective, significant, essential, critical)
3
burning(adjective, serious, essential, critical)
3
dominant(adjective, top, essential, prime)
3
elementary(adjective, top, significant, original)
3
foremost(adjective, importance, big, significant)
3
heavy(adjective, informal, big, significant)
3
leading(adjective, top, importance, serious)
3
of the essence(expression, adjective, idiom, essential)
3
signal(adjective, significant, imperative)
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APASmart Define. (2015). vital thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/vital/thesaurus/synonyms
ChicagoSmart Define. 2015. "vital thesaurus" https://smartdefine.org/vital/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, vital thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/vital/thesaurus/synonyms>.
MLASmart Define. "vital thesaurus" 2 November 2015. Web. 26 September 2026. <https://smartdefine.org/vital/thesaurus/synonyms>