- Definitions|1
- Thesaurus|82
- Abbreviations|0
16 entries under free topic. ×
| discretionary(adjective, open, voluntary, elective) | |
| elective(adjective, open, able, voluntary) | |
| facultative(adjective, open, voluntary, elective) | |
| voluntary(adjective, open, elective, electoral) | |
| arbitrary(adjective, open, voluntary, elective) | |
| discretional(adjective, open, voluntary, elective) | |
| alternative(open, voluntary, elective) | |
| extra(open, voluntary, elective) | |
| no strings attached(expression, idiom, open, voluntary) | |
| noncompulsory(open, voluntary, elective) | |
| not required(expression, open, voluntary, elective) | |
| open(voluntary, elective) | |
| unforced(open, voluntary, elective) | |
| unrestricted(open, voluntary, elective) | |
| up to the individual(expression, idiom, open, voluntary) | |
| volitional(open, voluntary, elective) |
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| APA | Smart Define. (2013). nonobligatory thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/nonobligatory/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "nonobligatory thesaurus" https://smartdefine.org/nonobligatory/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2013, nonobligatory thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/nonobligatory/thesaurus/synonyms>. |
| MLA | Smart Define. "nonobligatory thesaurus" 28 June 2013. Web. 29 September 2026. <https://smartdefine.org/nonobligatory/thesaurus/synonyms> |