Synonyms|56Antonyms|4|Broader|3Narrower|0Related|13
1
imperative(need, essential, requirement, prerequisite, essentiality)
1
inevitability(need, essential, requirement, prerequisite, essentiality)
1
inexorableness(need, essential, requirement, prerequisite, essentiality)
1
life or death(expression, idiom, need, essential, requirement)
1
must(need, essential, requirement, prerequisite, inevitability)
1
necessary(need, essential, requirement, prerequisite, inevitability)
1
need(essential, requirement, prerequisite, inevitability, essentiality)
1
no alternative(expression, need, essential, requirement, prerequisite)
1
no choice(expression, need, essential, requirement, prerequisite)
1
obligation(noun, need, essential, requirement, prerequisite)
1
pinch(need, essential, requirement, prerequisite, essentiality)
1
precondition(need, essential, requirement, prerequisite, essentiality)
1
prerequisite(need, essential, requirement, essentiality)
1
privation(need, essential, requirement, prerequisite, essentiality)
1
requirement(noun, need, essential, prerequisite, essentiality)
1
requisite(need, essential, requirement, prerequisite, essentiality)
1
sine qua non(expression, idiom, need, essential, requirement)
1
undeniability(need, essential, requirement, prerequisite, inevitability)
1
vital part(expression, need, essential, requirement, prerequisite)
1
vitals(need, essential, requirement, prerequisite, inevitability)
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APASmart Define. (2013). indispensability thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/indispensability/thesaurus/synonyms
ChicagoSmart Define. 2013. "indispensability thesaurus" https://smartdefine.org/indispensability/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, indispensability thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/indispensability/thesaurus/synonyms>.
MLASmart Define. "indispensability thesaurus" 28 June 2013. Web. 21 September 2026. <https://smartdefine.org/indispensability/thesaurus/synonyms>