2
main(adjective, important, original, serious, capital)
2
necessaries
2
necessities
2
need
2
significant(adjective, important, original, serious, essential)
2
wanted(adjective, important, significant, serious, capital)
1
absolutely necessary(expression, idiom)
1
all-important(adjective, important, significant, serious, essential)
1
animated
1
axiological(important, significant, original, basic, vital)
1
axiomatic(important, significant, original, basic, vital)
1
bare necessities
1
bedrock
1
biotic
1
bottom(adjective, important, significant, original, essential)
1
bounden
1
call for
1
called-for
1
capital(important, essential, vital, key, earnest)
1
characteristic
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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>