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

52 entries under original topic. ×

2
significant(adjective, important, serious, essential)
1
axiological(important, significant, basic, vital)
1
axiomatic(important, significant, basic, vital)
1
bottom(adjective, important, significant, essential)
1
constitutional(characteristic, important, significant, essential)
1
deep-seated(characteristic, essential, basic, primary)
1
first(important, significant, serious, basic)
1
foundational(important, significant, basic, vital)
1
grass-roots(important, significant, basic, vital)
1
latent(adjective, characteristic, natural, essential)
1
major(important, significant, basic, vital)
1
meat-and-potatoes(important, significant, essential, critical)
1
nitty-gritty(adjective, important, essential, critical)
1
prime(adjective, important, significant, serious)
1
primitive(adjective, important, significant, essential)
1
primordial(important, significant, basic, vital)
1
radical(adjective, important, significant, essential)
1
rudimentary(important, significant, basic, vital)
1
structural(important, significant, basic, vital)
1
substratal(adjective, important, significant, essential)
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APASmart Define. (2015). indispensable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/indispensable/thesaurus/synonyms
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>