363 entries under adjective topic. ×

4
perceptive(instinctive, intuitive)
4
reckless(noun, careless, casual, thoughtless)
4
uncontrolled(reasonable, relaxed, wild, common)
4
understood(instinctive, intuitive)
4
unreflecting(impulsive, rash, unthinking, instinctive)
4
unscripted(unprepared, impromptu, unplanned, unrehearsed)
4
unwritten
4
viscerous(gut, intuitive)
3
open(calm, simple, easy, informal)
3
complimentary(feature, characteristic, free, gratis)
3
designful(feature, characteristic, free, deliberate)
3
discretionary
3
elected(feature, characteristic, free, deliberate)
3
frank(open, simple, easy, careless)
3
free-willed(feature, characteristic, free, deliberate)
3
freely(feature, characteristic, free, deliberate)
3
genuine(feature, characteristic, honest, modest)
3
headlong(noun, thoughtless, rash, unthinking)
3
honorable(feature, characteristic)
3
honorary(feature, characteristic, free, regard)
11 years ago|16k views|share |citing 
APASmart Define. (2015). spontaneous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/spontaneous/thesaurus/synonyms
ChicagoSmart Define. 2015. "spontaneous thesaurus" https://smartdefine.org/spontaneous/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, spontaneous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/spontaneous/thesaurus/synonyms>.
MLASmart Define. "spontaneous thesaurus" 3 August 2015. Web. 27 September 2026. <https://smartdefine.org/spontaneous/thesaurus/synonyms>