7
indispensable(adjective, useful, unimportant, unnecessary, necessary)
5
necessary
5
needed
2
compulsory
2
critical
2
crucial
2
essential
2
imperative
2
required
2
useful
2
vital
1
irreplaceable
1
all-important
1
central
1
needful
1
obligatory
1
peremptory
1
requisite
1
urgent
0
ample
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APASmart Define. (2015). dispensable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dispensable/thesaurus/antonyms
ChicagoSmart Define. 2015. "dispensable thesaurus" https://smartdefine.org/dispensable/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, dispensable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dispensable/thesaurus/antonyms>.
MLASmart Define. "dispensable thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/dispensable/thesaurus/antonyms>