63 entries under essential topic. ×

5
life-or-death(adjective, important, critical, basic)
5
needful(adjective, significant, basic, vital)
5
obligatory(adjective, important, significant, critical)
5
significant(adjective, clear, tough, severe, big)
4
compulsory(adjective, important, significant, critical)
4
paramount(adjective, direct, prompt, big, important)
4
requisite(adjective, important, significant, critical)
4
wanted(adjective, significant, basic, vital)
3
chief(adjective, great, big, significant, substantial)
3
heavy(adjective, tough, severe, informal, big)
3
mandatory(adjective, significant, basic, vital)
3
necessitous(required, needed)
3
needed(adjective, important, significant, critical)
3
principal(adjective, great, big, significant, substantial)
2
decisive(adjective, severe, big, important, significant)
2
meaningful(severe, important, substantial, serious, valuable)
1
all-important(adjective, important, significant, serious)
1
basic(adjective, important, significant, critical)
1
bottom-line(adjective, important, significant, critical)
1
cardinal(adjective, important, significant, critical)
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APASmart Define. (2015). urgent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/urgent/thesaurus/synonyms
ChicagoSmart Define. 2015. "urgent thesaurus" https://smartdefine.org/urgent/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, urgent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/urgent/thesaurus/synonyms>.
MLASmart Define. "urgent thesaurus" 3 August 2015. Web. 26 September 2026. <https://smartdefine.org/urgent/thesaurus/synonyms>