31 entries under adjective topic. ×

7
organic(unimportant, inorganic)
5
essential(important, vital)
3
necessary(unimportant, trivial, essential)
3
vital
2
basic(insignificant, fundamental, intricate, elementary)
2
constitutional
2
crucial(important, critical)
2
imperative
2
indispensable
2
main(common, inferior, utter, absolute)
2
needed(unimportant, necessary)
2
primary
2
substantive
1
key(important, insignificant, unimportant, essential)
0
cardinal(important, key)
0
central
0
chief(important, essential)
0
designed(necessary, unmethodical, fluky, lucky-dog)
0
determinative
0
elemental
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APASmart Define. (2015). inessential thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inessential/thesaurus/antonyms
ChicagoSmart Define. 2015. "inessential thesaurus" https://smartdefine.org/inessential/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inessential thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inessential/thesaurus/antonyms>.
MLASmart Define. "inessential thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/inessential/thesaurus/antonyms>