Synonyms|665Antonyms|174|Broader|10Narrower|15Related|812

45 entries under chief topic. ×

40
essential(noun, adjective, body, material, big)
29
indispensable(adjective, important, significant, original, essential)
28
vital(adjective, body, material, big, important)
23
fundamental(noun, adjective, body, material, important)
21
important(adjective, significant, original, substantial, serious)
17
crucial(adjective, big, important, significant, original)
13
basic(noun, adjective, body, material, important)
12
key(adjective, important, significant, original, essential)
11
cardinal(noun, adjective, important, significant, original)
10
main(adjective, important, significant, original, capital)
10
principal(adjective, body, material, big, important)
10
significant(adjective, big, important, original, substantial)
8
critical(adjective, big, important, significant, substantial)
7
prime(adjective, body, material, important, significant)
6
paramount(adjective, important, significant, original, substantial)
5
central(adjective, important, significant, original, essential)
5
necessitous(adjective, important, capital, essential, vital)
5
primary(adjective, body, material, big, important)
3
influential(adjective, great, big, important, significant)
3
serious(adjective, big, important, significant, substantial)
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HarvardSmart Define 2015, necessary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>.
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