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

93 entries under adjective topic. ×

7
unavoidable(set, significant, essential, basic)
6
cardinal(important, significant, original, essential)
6
central(important, significant, serious, basic)
6
compelling(important, significant, serious, essential)
6
critical(important, original, serious, essential)
6
inescapable
5
must
5
necessitous(important, capital, essential, vital)
5
of the essence(expression, idiom, important, essential)
5
pressing(important, significant, essential, critical)
5
primary(important, significant, original, serious)
5
staple
4
in demand(expression, idiom, requirement)
4
integral(important, original, essential, critical)
4
life-and-death
4
material(noun, important, relevant)
4
substantive
3
binding(significant, essential, basic, vital)
3
inherent(characteristic, essential, basic, fundamental)
3
involuntary
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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>