- Definitions|0
- Thesaurus|85
- Abbreviations|0
55 entries under adjective topic. ×
| unforced(open, free, voluntary, elective) | |
| unneeded | |
| up to the individual(expression, idiom, open, free) | |
| volitional(open, free, voluntary, elective) | |
| voluntary(open, free, elective) | |
| abnormal | |
| accidental | |
| complimentary | |
| curious | |
| dispensable | |
| droll | |
| eccentric | |
| exceptional | |
| excessive | |
| expendable | |
| extraordinary | |
| free(open, voluntary, elective) | |
| funny | |
| gratuitous | |
| grotesque |
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| APA | Smart Define. (2013). noncompulsory thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/noncompulsory/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "noncompulsory thesaurus" https://smartdefine.org/noncompulsory/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2013, noncompulsory thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/noncompulsory/thesaurus/synonyms>. |
| MLA | Smart Define. "noncompulsory thesaurus" 17 June 2013. Web. 25 September 2026. <https://smartdefine.org/noncompulsory/thesaurus/synonyms> |