12 entries under voluntary topic. ×

6
donated(verb, adjective, free, due)
2
unpaid(adjective, free, honorary)
1
free(adjective, honorary)
1
gratuitous(adjective, honorary)
1
unindemnified
1
unrewarded
1
unsalaried(adjective, unpaid, honorary)
1
volunteer
0
amateur
0
due
0
freewilled(adjective, honorary, unrewarded)
0
honorary
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APASmart Define. (2015). contributed thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/contributed/thesaurus/synonyms
ChicagoSmart Define. 2015. "contributed thesaurus" https://smartdefine.org/contributed/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, contributed thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/contributed/thesaurus/synonyms>.
MLASmart Define. "contributed thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/contributed/thesaurus/synonyms>