Synonyms|808Antonyms|181|Broader|12Narrower|6Related|385

85 entries under significant topic. ×

20
important(adjective, original, essential, critical)
19
primary(adjective, lead, important, head)
18
cardinal(noun, adjective, lead, important, head)
16
fundamental(adjective, important, original, essential)
16
essential(adjective, important, original, basic)
16
chief(adjective, lead, important, head)
15
main(adjective, lead, important, head)
15
prime(adjective, lead, important, head)
14
principal(adjective, lead, important, head)
11
foremost(adjective, lead, head, master)
10
crucial(adjective, important, original, essential)
10
paramount(adjective, important, original, essential)
9
basic(adjective, important, original, essential)
9
vital(adjective, important, original, essential)
7
major(adjective, lead, important, head)
6
critical(adjective, important, essential, vital)
4
elemental(adjective, important, original, essential)
4
elementary(adjective, top, important, original)
4
first(adjective, top, important, original)
4
indispensable(adjective, important, original, serious)
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ChicagoSmart Define. 2015. "central thesaurus" https://smartdefine.org/central/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, central thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/central/thesaurus/synonyms>.
MLASmart Define. "central thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/central/thesaurus/synonyms>