12
willingly(adverb, willing, happily, freely, readily)
12
freely(adjective, adverb, willing, happily, readily)
11
intentionally(adverb, happily, freely, willingly, openly)
11
deliberately(adverb, happily, freely, willingly, openly)
10
spontaneously(adverb, willing, happily, willingly, openly)
6
optionally(adverb, happily, willingly)
6
willfully(adverb, willing, deliberately)
5
by choice(expression, adverb, happily, willingly)
5
consciously(adverb, deliberately)
4
gratuitously
4
independently
4
purposely(adverb, willingly, openly, candidly)
3
advisedly(willingly, openly, candidly)
3
calculatedly(adverb, deliberately)
3
electively
3
on purpose(adverb, done)
3
premeditatedly(adverb, deliberately)
2
designedly(willingly, openly, candidly)
2
frankly(freely, willingly, openly, candidly)
2
gratis
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APASmart Define. (2015). voluntarily thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/voluntarily/thesaurus/synonyms
ChicagoSmart Define. 2015. "voluntarily thesaurus" https://smartdefine.org/voluntarily/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, voluntarily thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/voluntarily/thesaurus/synonyms>.
MLASmart Define. "voluntarily thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/voluntarily/thesaurus/synonyms>