86 entries under willing topic. ×

3
designful(adjective, feature, characteristic, free, deliberate)
3
elected(adjective, feature, characteristic, free, deliberate)
3
free-willed(adjective, feature, characteristic, free, deliberate)
3
freely(adjective, feature, characteristic, free, deliberate)
3
honorary(adjective, feature, characteristic, free, regard)
3
off-the-cuff(adjective, simple, informal, natural, straightforward)
3
uncontrived(adjective, simple, easy, real, impulsive)
3
uninvited(adjective, arrogant, unexpected, voluntary)
3
unpaid(adjective, feature, characteristic, free, deliberate)
3
unrequested(adjective, arrogant, voluntary, unwelcome)
3
unsought(adjective, arrogant, voluntary, unwelcome)
2
deliberate(adjective, feature, characteristic, free, natural)
2
down(adjective, impulsive, unforced, unprompted)
2
inevitable(adjective, impulsive, unforced, unprompted)
2
irresistible(adjective, impulsive, unforced, unprompted)
2
unavoidable(adjective, impulsive, unforced, unprompted)
2
uncalled-for(adjective, arrogant, voluntary, unwelcome)
2
unwanted(adjective, arrogant, voluntary, unwelcome)
1
break loose(expression, adjective, impulsive, unforced)
1
free spirited(expression, adjective, impulsive, unforced)
11 years ago|16k views|share |citing 
APASmart Define. (2015). spontaneous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/spontaneous/thesaurus/synonyms
ChicagoSmart Define. 2015. "spontaneous thesaurus" https://smartdefine.org/spontaneous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, spontaneous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/spontaneous/thesaurus/synonyms>.
MLASmart Define. "spontaneous thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/spontaneous/thesaurus/synonyms>