27 entries under volunteer topic. ×

10
optional(adjective, free, deliberate, natural, choice)
7
free(adjective, feature, characteristic, open, deliberate)
6
independent(adjective, feature, characteristic, free, respect)
5
chosen(adjective, feature, characteristic, free, respect)
5
deliberate(adjective, feature, characteristic, free, respect)
5
designful(adjective, feature, characteristic, free, respect)
5
elected(adjective, feature, characteristic, free, respect)
5
free-willed(adjective, feature, characteristic, free, respect)
5
freely(adjective, feature, characteristic, free, respect)
5
spontaneous(adjective, feature, characteristic, free, deliberate)
4
autonomous(adjective, feature, characteristic, free, deliberate)
4
gratuitous(adjective, feature, characteristic, free, deliberate)
4
unasked(adjective, feature, characteristic, free, deliberate)
4
unconstrained(adjective, feature, characteristic, free, deliberate)
4
volitional(adjective, feature, characteristic, open, free)
3
honorary(adjective, feature, characteristic, free, respect)
3
intended(adjective, feature, characteristic, free, deliberate)
3
intentional(adjective, feature, characteristic, free, deliberate)
3
uncompelled(adjective, free, deliberate, natural, witting)
3
unpaid(adjective, feature, characteristic, free, deliberate)
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APASmart Define. (2015). discretional thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/discretional/thesaurus/synonyms
ChicagoSmart Define. 2015. "discretional thesaurus" https://smartdefine.org/discretional/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, discretional thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/discretional/thesaurus/synonyms>.
MLASmart Define. "discretional thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/discretional/thesaurus/synonyms>