- Definitions|2
- Thesaurus|671
- Abbreviations|0
42 entries under primary topic. ×
| essential(adjective, characteristic, important, significant, original) | |
| necessary(adjective, important, significant, original, essential) | |
| requisite(adjective, important, significant, original, essential) | |
| vital(adjective, important, significant, original, serious) | |
| crucial(adjective, important, significant, original, serious) | |
| fundamental(adjective, characteristic, important, significant, natural) | |
| basic(adjective, characteristic, important, significant, natural) | |
| cardinal(adjective, important, significant, original, essential) | |
| paramount(adjective, important, significant, original, serious) | |
| principal(adjective, important, significant, original, serious) | |
| basal(adjective, important, significant, original, essential) | |
| bottom-line(adjective, important, significant, original, essential) | |
| elemental(adjective, important, significant, original, essential) | |
| elementary(adjective, characteristic, important, significant, natural) | |
| intrinsic(adjective, characteristic, important, significant, natural) | |
| significant(adjective, important, original, serious, essential) | |
| axiological(important, significant, original, basic, vital) | |
| axiomatic(important, significant, original, basic, vital) | |
| bottom(adjective, important, significant, original, essential) | |
| deep-seated(characteristic, original, essential, basic) |
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| APA | Smart Define. (2015). indispensable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/indispensable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, indispensable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/indispensable/thesaurus/synonyms>. |
| MLA | Smart Define. "indispensable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/indispensable/thesaurus/synonyms> |