71 entries under significant topic. ×

38
essential(noun, adjective, right, condition, important)
29
necessary(noun, adjective, important, want, need)
24
required(adjective, close, correct, exact, important)
23
indispensable(adjective, important, original, essential)
22
imperative(noun, adjective, important, need)
20
prerequisite(noun, adjective, condition, important, want)
16
mandatory(adjective, essential, basic, vital)
15
vital(adjective, important, original, essential)
15
needful(adjective, important, capital, essential)
14
compulsory(adjective, essential, basic, vital)
14
obligatory(adjective, appropriate, proper, suitable)
14
needed(adjective, close, correct, exact, important)
10
fundamental(noun, adjective, important, need)
8
basic(noun, adjective, important, want)
7
crucial(adjective, important, original, essential)
6
important(adjective, original, essential, critical)
5
binding(adjective, essential, basic, vital)
5
integral(adjective, important, original, essential)
5
pressing(adjective, essential, basic, vital)
4
urgent(adjective, important, essential, critical)
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APASmart Define. (2015). requisite thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/requisite/thesaurus/synonyms
ChicagoSmart Define. 2015. "requisite thesaurus" https://smartdefine.org/requisite/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, requisite thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/requisite/thesaurus/synonyms>.
MLASmart Define. "requisite thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/requisite/thesaurus/synonyms>