Synonyms|413Antonyms|112|Broader|7Narrower|11Related|520

38 entries under critical topic. ×

35
necessary(adjective, right, important, essential)
24
needed(verb, adjective, close, correct, exact)
22
essential(adjective, important, significant, basic)
19
requisite(adjective, close, correct, exact, important)
19
indispensable(adjective, important, significant, serious, essential)
17
imperative(adjective, important, significant, essential)
11
vital(adjective, important, significant, serious, essential)
8
prerequisite(adjective, important, significant, essential)
6
urgent(adjective, important, significant, essential)
5
pressing(adjective, important, significant, serious, essential)
4
crucial(adjective, important, significant, serious, capital)
4
important(adjective, essential, vital, fundamental)
3
basic(adjective, important, significant, essential)
3
compelling(adjective, important, significant, serious, essential)
3
fundamental(adjective, important, significant, capital, essential)
2
cardinal(adjective, important, significant, capital, essential)
2
coal-and-ice(important, essential, basic, fundamental)
2
constitutive(important, capital, essential, basic)
2
decisive(adjective, important, significant, essential)
2
exigent(adjective, important, significant, serious, essential)
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APASmart Define. (2015). required thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/required/thesaurus/synonyms
ChicagoSmart Define. 2015. "required thesaurus" https://smartdefine.org/required/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, required thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/required/thesaurus/synonyms>.
MLASmart Define. "required thesaurus" 3 November 2015. Web. 25 September 2026. <https://smartdefine.org/required/thesaurus/synonyms>