10 entries under able topic. ×

21
optional(adjective, choice, possible, voluntary)
14
voluntary(adjective, open, free)
14
discretionary(adjective, open, free, fit, choice)
8
electoral(adjective, electing)
8
facultative(adjective, open, free, choice)
7
selective
4
constituent
2
nonobligatory(adjective, open, free, voluntary)
2
voting(adjective, government)
1
not compulsory(expression, adjective, idiom)
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APASmart Define. (2015). elective thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/elective/thesaurus/synonyms
ChicagoSmart Define. 2015. "elective thesaurus" https://smartdefine.org/elective/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, elective thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/elective/thesaurus/synonyms>.
MLASmart Define. "elective thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/elective/thesaurus/synonyms>