Synonyms|285Antonyms|76|Broader|4Narrower|0Related|306

68 entries under significant topic. ×

6
central(adjective, important, serious, basic)
6
compelling(adjective, important, serious, essential)
5
pressing(adjective, important, essential, critical)
5
primary(adjective, important, original, serious)
3
binding(adjective, essential, basic, vital)
3
paramount(adjective, important, original, serious)
3
principal(adjective, important, original, serious)
2
basal(adjective, important, original, essential)
2
bottom-line(adjective, important, original, essential)
2
chief(adjective, important, serious, capital)
2
elemental(adjective, important, original, essential)
2
elementary(adjective, characteristic, important, natural)
2
exigent(adjective, important, serious, essential)
2
intrinsic(adjective, characteristic, important, natural)
2
wanted(adjective, important, serious, capital)
1
all-important(adjective, important, serious, essential)
1
axiological(important, original, basic, vital)
1
axiomatic(important, original, basic, vital)
1
bottom(adjective, important, original, essential)
1
constitutional(characteristic, important, original, essential)
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ChicagoSmart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, indispensable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/indispensable/thesaurus/synonyms>.
MLASmart Define. "indispensable thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/indispensable/thesaurus/synonyms>