5
compulsory
2
imperative(adjective, insignificant, unimportant, authoritative)
2
mandatory
2
obligatory
2
required
1
necessary
1
essential
1
forced
1
indispensable
1
involuntary
1
nonarbitrary
1
nondiscretionary
1
nonelective
1
requisite
1
restricted
1
stringent
0
authoritative
0
automatic
0
binding
0
bounden
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APASmart Define. (2015). discretionary thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/discretionary/thesaurus/antonyms
ChicagoSmart Define. 2015. "discretionary thesaurus" https://smartdefine.org/discretionary/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, discretionary thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/discretionary/thesaurus/antonyms>.
MLASmart Define. "discretionary thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/discretionary/thesaurus/antonyms>