46 entries under voluntary topic. ×
| intended(adjective, feature, characteristic, free, deliberate) | |
| intentional(adjective, feature, characteristic, free, deliberate) | |
| spontaneous(adjective, feature, characteristic, free, deliberate) | |
| unasked(adjective, feature, characteristic, free, deliberate) | |
| unconstrained(adjective, feature, characteristic, free, deliberate) | |
| volitional(adjective, feature, characteristic, free, deliberate) | |
| willed(adjective, feature, characteristic, free, deliberate) | |
| contributed(adjective, free, honorary) | |
| donated(adjective, free, honorary) | |
| freewilled(adjective, free, honorary, unrewarded) | |
| opted(adjective, free, deliberate, natural, willing) | |
| optional(adjective, free, deliberate, natural, willing) | |
| pro bono | |
| unbidden(adjective, free, deliberate, natural, willing) | |
| uncompelled(adjective, free, deliberate, natural, willing) | |
| unindemnified(adjective, free, honorary, unrewarded) | |
| unprescribed(adjective, free, deliberate, natural, willing) | |
| willful(adjective, free, deliberate, natural, willing) | |
| wished(adjective, free, deliberate, natural, willing) | |
| witting(adjective, free, deliberate, natural, willing) |
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| APA | Smart Define. (2015). unpaid thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unpaid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unpaid thesaurus" https://smartdefine.org/unpaid/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2015, unpaid thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unpaid/thesaurus/synonyms>. |
| MLA | Smart Define. "unpaid thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/unpaid/thesaurus/synonyms> |