35 entries under natural topic. ×

3
gratuitous(adjective, feature, characteristic, free, deliberate)
3
honorary(adjective, feature, characteristic, free, regard)
3
independent(adjective, feature, characteristic, free, deliberate)
3
uncompelled(adjective, free, deliberate, willing)
3
unpaid(adjective, feature, characteristic, free, deliberate)
2
genuine(adjective, feature, characteristic, spontaneous)
1
opted(adjective, free, deliberate, willing)
1
unbidden(adjective, free, deliberate, willing)
1
unprescribed(adjective, free, deliberate, willing)
1
wished(adjective, free, deliberate, willing)
1
witting(adjective, free, deliberate, determined)
0
artless(spontaneous, voluntary)
0
effortless(spontaneous, voluntary)
0
unprompted(spontaneous, voluntary)
0
unwitting(spontaneous, voluntary)
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APASmart Define. (2015). volitional thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/volitional/thesaurus/synonyms
ChicagoSmart Define. 2015. "volitional thesaurus" https://smartdefine.org/volitional/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, volitional thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/volitional/thesaurus/synonyms>.
MLASmart Define. "volitional thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/volitional/thesaurus/synonyms>