Synonyms|98Antonyms|0|Broader|0Narrower|0Related|1
1
necessary(noun, adjective, need, essential, basic)
1
need(noun, essential, requirement, prerequisite, inevitability)
1
needfulness(noun, need, essential, requirement, prerequisite)
1
no alternative(noun, expression, need, essential, requirement)
1
no choice(noun, expression, need, essential, requirement)
1
obligation(noun, need, essential, requirement, prerequisite)
1
pinch(noun, need, essential, requirement, prerequisite)
1
precondition(noun, need, essential, requirement, prerequisite)
1
prerequisite(noun, adjective, need, essential, basic)
1
privation(noun, need, essential, requirement, prerequisite)
1
requirement(noun, need, essential, prerequisite, essentiality)
1
requisite(noun, adjective, need, essential, basic)
1
sine qua non(noun, expression, idiom, need, essential)
1
undeniability(noun, need, essential, requirement, prerequisite)
1
urgency(noun, need, essential, requirement, prerequisite)
1
vital(adjective, important, serious, critical, renowned)
1
vital part(noun, expression, need, essential, requirement)
1
vitally important
1
vitals(noun, need, essential, requirement, prerequisite)
1
want(noun, need, essential, requirement, prerequisite)
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APASmart Define. (1970). life or death thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/life_or_death/thesaurus/synonyms
ChicagoSmart Define. 1970. "life or death thesaurus" https://smartdefine.org/life_or_death/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 1970, life or death thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/life_or_death/thesaurus/synonyms>.
MLASmart Define. "life or death thesaurus" 1 January 1970. Web. 29 September 2026. <https://smartdefine.org/life_or_death/thesaurus/synonyms>