5
purposeful(adjective, deliberate, determined, careful, thoughtful)
5
titular(adjective, feature, characteristic, honor)
5
uncompelled(adjective, free, simple, deliberate, natural)
5
uncompensated(adjective, feature, characteristic, work, pay)
5
unprompted(adjective, simple, natural, casual, impulsive)
5
wilful
5
willed(adjective, feature, characteristic, free, deliberate)
4
complimentary(adjective, feature, characteristic, free, gratis)
4
designful(adjective, feature, characteristic, set, direct)
4
freely(adjective, feature, characteristic, free, deliberate)
4
genuine(adjective, feature, characteristic, natural, spontaneous)
4
uncoerced
4
wanton
3
aforethought(deliberate, careful, thoughtful, cautious, planned)
3
facultative(adjective, open, free, elective, optional)
3
favoured(adjective, feature, characteristic)
3
free-willed(adjective, feature, characteristic, free, deliberate)
3
freewill
3
honourary(adjective, feature, characteristic)
3
instinctive(adjective, simple, natural, casual, impulsive)
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APASmart Define. (2015). voluntary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/voluntary/thesaurus/synonyms
ChicagoSmart Define. 2015. "voluntary thesaurus" https://smartdefine.org/voluntary/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, voluntary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/voluntary/thesaurus/synonyms>.
MLASmart Define. "voluntary thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/voluntary/thesaurus/synonyms>