21 entries under adjective topic. ×

11
unnecessary(unimportant, valuable, required)
7
dispensable(able, necessary)
7
needless
4
superfluous
3
optional
2
nonessential
1
unessential
0
additional
0
disposable
0
expendable
0
extra
0
minor
0
redundant
0
supplementary
0
unneeded
0
excessive
0
immaterial
0
marginal
0
removable
0
trivial
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APASmart Define. (2015). indispensable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/indispensable/thesaurus/antonyms
ChicagoSmart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, indispensable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/indispensable/thesaurus/antonyms>.
MLASmart Define. "indispensable thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/indispensable/thesaurus/antonyms>