Synonyms|679Antonyms|135|Broader|7Narrower|8Related|331

60 entries under primary topic. ×

65
important(adjective, great, tough, severe, extraordinary)
46
vital(adjective, great, severe, big, heavy)
40
essential(adjective, severe, big, important, significant)
25
momentous(adjective, great, tough, severe, extraordinary)
22
necessary(adjective, big, important, significant, original)
19
significant(adjective, great, tough, severe, extraordinary)
18
fundamental(adjective, important, significant, original, capital)
17
key(adjective, important, significant, original, essential)
16
major(adjective, great, tough, severe, heavy)
15
basic(adjective, important, significant, original, essential)
12
main(adjective, important, significant, original, capital)
11
weighty(adjective, great, tough, severe, big)
10
indispensable(adjective, important, significant, original, serious)
9
consequential(adjective, big, heavy, important, lively)
6
cardinal(adjective, important, significant, original, essential)
6
principal(adjective, great, big, important, significant)
6
requisite(adjective, important, significant, original, essential)
4
chief(adjective, great, big, heavy, important)
4
underlying(adjective, important, original, basic, vital)
3
elementary(adjective, important, significant, original, essential)
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APASmart Define. (2016). crucial thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/crucial/thesaurus/synonyms
ChicagoSmart Define. 2016. "crucial thesaurus" https://smartdefine.org/crucial/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, crucial thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/crucial/thesaurus/synonyms>.
MLASmart Define. "crucial thesaurus" 11 March 2016. Web. 27 September 2026. <https://smartdefine.org/crucial/thesaurus/synonyms>