180 entries under adjective topic. ×

16
spontaneous(feature, characteristic, simple, regard)
13
voluntary(feature, characteristic, open, free)
11
free(feature, characteristic, open, simple)
10
intentional(feature, characteristic, free, regard)
10
volunteer(feature, characteristic, free, regard)
9
instinctive(open, simple, easy, natural)
9
volitional(feature, characteristic, open, free)
8
optional(free, deliberate, natural, willing)
8
unasked(feature, characteristic, free, regard)
8
uncoerced
8
uncompelled(free, simple, deliberate, natural)
8
unconstrained(feature, characteristic, free, simple)
8
willful(free, keen, happy, agreeable)
7
deliberate(feature, characteristic, free, keen)
7
gratuitous(feature, characteristic, free, deliberate)
7
intended(feature, characteristic, free, regard)
7
willing(free, simple, keen, enthusiastic)
6
autonomous(feature, characteristic, free, deliberate)
6
discretional(feature, characteristic, open, free)
6
independent(feature, characteristic, free, deliberate)
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APASmart Define. (2015). unforced thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unforced/thesaurus/synonyms
ChicagoSmart Define. 2015. "unforced thesaurus" https://smartdefine.org/unforced/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unforced thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unforced/thesaurus/synonyms>.
MLASmart Define. "unforced thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/unforced/thesaurus/synonyms>