363 entries under adjective topic. ×

6
instantaneous(impulsive, immediate, sudden)
6
intrinsic(natural, instinctive, automatic, involuntary)
6
intuitional(natural, instinctive, automatic, involuntary)
6
native(reasonable, ordinary, instinctive, automatic)
6
rooted(natural, instinctive, automatic, involuntary)
6
second-nature(instinctive, automatic, involuntary, reflex)
6
typical(ordinary, normal, instinctive, automatic)
6
unaffected(simple, easy, honest, plain)
6
unintentional(natural, chance, routine, impulsive)
6
volitional(feature, characteristic, free, regard)
6
volunteer(feature, characteristic, free, regard)
5
chosen(verb, feature, characteristic, free)
5
discretional(feature, characteristic, free, deliberate)
5
independent(feature, characteristic, free, deliberate)
5
intimate(simple, plain, straightforward, casual)
5
reflexive(impulsive, unwilling, obligatory, compulsory)
5
self-generated
5
simple(open, light, easy, pure)
5
snap(noun, light, free, simple)
5
sudden(noun, passionate, violent, careless)
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APASmart Define. (2015). spontaneous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/spontaneous/thesaurus/synonyms
ChicagoSmart Define. 2015. "spontaneous thesaurus" https://smartdefine.org/spontaneous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, spontaneous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/spontaneous/thesaurus/synonyms>.
MLASmart Define. "spontaneous thesaurus" 3 August 2015. Web. 26 September 2026. <https://smartdefine.org/spontaneous/thesaurus/synonyms>