Synonyms|285Antonyms|76|Broader|4Narrower|0Related|306
1
coal-and-ice(important, essential, critical, basic, fundamental)
1
connate
1
constitutional(characteristic, important, significant, original, essential)
1
constitutive(important, capital, essential, critical, basic)
1
decisive(adjective, important, significant, essential, critical)
1
deep-seated(characteristic, original, essential, basic, primary)
1
demand for
1
desideration
1
desideratum
1
distinctive
1
exigency
1
existent
1
first(important, significant, original, serious, basic)
1
fixed
1
focal
1
foundational(important, significant, original, basic, vital)
1
genetic
1
grass-roots(important, significant, original, basic, vital)
1
heavy(important, essential, critical, fundamental, earnest)
1
idiopathic
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APASmart Define. (2015). indispensable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/indispensable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, indispensable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/indispensable/thesaurus/synonyms>.
MLASmart Define. "indispensable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/indispensable/thesaurus/synonyms>