18 entries under voluntary topic. ×
| optional(adjective, choice, able, possible) | |
| facultative(adjective, open, free, choice, able) | |
| alternative(adjective, open, free, optional) | |
| discretional(adjective, open, free, optional) | |
| free(adjective, open) | |
| unforced(adjective, open, free) | |
| arbitrary(adjective, open, free) | |
| nonobligatory(adjective, open, free, able) | |
| uncompelled | |
| volitional(adjective, open, free) | |
| no strings attached(expression, adjective, idiom, open, free) | |
| noncompulsory(adjective, open, free) | |
| not required(expression, adjective, open, free) | |
| open(adjective, free) | |
| possible | |
| unrestricted(adjective, open, free) | |
| up to the individual(expression, adjective, idiom, open, free) | |
| extra(adjective, open, free) |
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Elective on
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| APA | Smart Define. (2015). elective thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/elective/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "elective thesaurus" https://smartdefine.org/elective/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, elective thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/elective/thesaurus/synonyms>. |
| MLA | Smart Define. "elective thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/elective/thesaurus/synonyms> |