54 entries under free topic. ×
| unasked(adjective, feature, characteristic, keen) | |
| unbidden(adjective, simple, keen, happy) | |
| elected(adjective, feature, characteristic, deliberate) | |
| witting(adjective, set, direct, keen) | |
| uncompelled(adjective, simple, deliberate, natural) | |
| willed(adjective, feature, characteristic, deliberate) | |
| complimentary(adjective, feature, characteristic, gratis) | |
| designful(adjective, feature, characteristic, set, direct) | |
| freely(adjective, feature, characteristic, deliberate) | |
| facultative(adjective, open, elective, optional) | |
| free-willed(adjective, feature, characteristic, deliberate) | |
| alternative(open, elective) | |
| arbitrary(open, elective) | |
| nonobligatory(open, elective) | |
| gratis | |
| opted(adjective, deliberate, natural, willing) | |
| unprescribed(adjective, deliberate, natural, willing) | |
| wished(adjective, deliberate, natural, willing) | |
| at no charge(expression, idiom, gratis) | |
| chargeless(willing, gratis) |
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Voluntary on
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| APA | Smart Define. (2015). voluntary thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/voluntary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "voluntary thesaurus" https://smartdefine.org/voluntary/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, voluntary thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/voluntary/thesaurus/synonyms>. |
| MLA | Smart Define. "voluntary thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/voluntary/thesaurus/synonyms> |