191 entries under adjective topic. ×

3
insistent(important, critical)
3
needed(important, significant, capital, essential)
3
needful(important, significant, original, capital)
3
noteworthy
3
obligatory(important, significant, essential, critical)
3
paramount(important, significant, original, serious)
3
prime(important, significant, original, essential)
3
prominent(important, exalted)
3
radical(great, important, significant, original)
3
relevant(big, significant, substantial, valuable)
3
rudimentary(important, significant, original, basic)
3
seminal
2
dangerous(great, severe, significant, serious)
2
basal(important, significant, original, essential)
2
bottom-line(important, significant, original, essential)
2
burning(important, serious, essential, critical)
2
charged
2
compulsory(important, significant, essential, critical)
2
considerable(big, heavy, important, powerful)
2
constitutional(important, significant, original, basic)
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APASmart Define. (2016). crucial thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/crucial/thesaurus/synonyms
ChicagoSmart Define. 2016. "crucial thesaurus" https://smartdefine.org/crucial/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, crucial thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/crucial/thesaurus/synonyms>.
MLASmart Define. "crucial thesaurus" 11 March 2016. Web. 29 September 2026. <https://smartdefine.org/crucial/thesaurus/synonyms>