106 entries under basic topic. ×

2
all-important(adjective, significant, essential, vital)
2
bottom-line(adjective, important, significant, original, essential)
2
compelling(adjective, significant, essential, vital)
2
de rigueur(expression, adjective, idiom, significant, essential)
2
exigent(adjective, significant, essential, vital)
2
prime(adjective, important, significant, original, essential)
2
unavoidable(adjective, significant, essential, vital)
2
wanted(adjective, important, significant, capital, essential)
1
ABCs(noun, condition, essence, necessity)
1
axiological(adjective, important, significant, original, essential)
1
axiomatic(important, significant, original, vital)
1
basal(adjective, important, significant, original, essential)
1
bottom(adjective, important, significant, original, essential)
1
coal-and-ice(important, essential, critical, fundamental)
1
constitutional(adjective, important, significant, original, essential)
1
constitutive(important, significant, capital, essential, critical)
1
decisive(adjective, important, significant, essential, critical)
1
elemental(adjective, important, significant, original, essential)
1
elementary(adjective, important, significant, original, essential)
1
exigency(noun, right, want, need, essential)
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APASmart Define. (2015). requisite thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/requisite/thesaurus/synonyms
ChicagoSmart Define. 2015. "requisite thesaurus" https://smartdefine.org/requisite/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, requisite thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/requisite/thesaurus/synonyms>.
MLASmart Define. "requisite thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/requisite/thesaurus/synonyms>