43 entries under adjective topic. ×

21
optional(choice, able, possible, voluntary)
14
voluntary(open, free, able)
14
discretionary(open, free, fit, choice)
9
eligible(fit, worthy)
8
electoral(able, electing)
8
elected
8
facultative(open, free, choice, able)
7
alternative(open, free, voluntary, optional)
7
discretional(open, free, voluntary, optional)
7
free(open, voluntary)
7
selective
7
unforced(open, free, voluntary)
5
gratuitous
4
constituent
4
spontaneous
4
unasked
4
uncoerced
4
unsolicited
2
arbitrary(open, free, voluntary)
2
nonobligatory(open, free, able, voluntary)
<123>
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APASmart Define. (2015). elective thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/elective/thesaurus/synonyms
ChicagoSmart Define. 2015. "elective thesaurus" https://smartdefine.org/elective/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, elective thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/elective/thesaurus/synonyms>.
MLASmart Define. "elective thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/elective/thesaurus/synonyms>