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

42 entries under primary topic. ×

1
foundational(important, significant, original, basic, vital)
1
grass-roots(important, significant, original, basic, vital)
1
major(important, significant, original, basic, vital)
1
prime(adjective, important, significant, original, serious)
1
primitive(adjective, important, significant, original, essential)
1
primordial(important, significant, original, basic, vital)
1
radical(adjective, important, significant, original, essential)
1
rudimentary(important, significant, original, basic, vital)
1
structural(important, significant, original, basic, vital)
1
substratal(adjective, important, significant, original, essential)
1
substrative(important, significant, original, basic, vital)
1
supporting(important, significant, original, basic, vital)
1
sustaining(important, significant, original, basic, vital)
1
theoretical(important, significant, original, basic, vital)
1
underived(important, significant, original, basic, vital)
0
concealed(adjective, original, basic, fundamental, hidden)
0
deep(original, basic)
0
hidden(adjective, original, basic, fundamental)
0
lurking(adjective, original, basic, fundamental, hidden)
0
nub(adjective, original, basic, fundamental)
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APASmart Define. (2015). indispensable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/indispensable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, indispensable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/indispensable/thesaurus/synonyms>.
MLASmart Define. "indispensable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/indispensable/thesaurus/synonyms>