59 entries under adjective topic. ×
| non-compulsory | |
| non-mandatory | |
| non-requisite | |
| occasional | |
| opportune | |
| promising | |
| propitious | |
| random | |
| sanctioning | |
| spontaneous | |
| suitable | |
| supporting | |
| supportive | |
| uncoerced | |
| uncompulsory | |
| unmandatory | |
| unrequisite | |
| useful | |
| voting |
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| APA | Smart Define. (2013). facultative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/facultative/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "facultative thesaurus" https://smartdefine.org/facultative/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2013, facultative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/facultative/thesaurus/synonyms>. |
| MLA | Smart Define. "facultative thesaurus" 28 June 2013. Web. 24 September 2026. <https://smartdefine.org/facultative/thesaurus/synonyms> |