112 entries under spontaneous topic. ×

44
innate(adjective, characteristic, body, start, physical)
32
inborn(adjective, characteristic, start, physical, ordinary)
30
native(adjective, characteristic, start, violent, wild)
30
habitual(adjective, characteristic, new, common, ordinary)
26
genuine(adjective, open, simple, correct, right)
24
instinctive(adjective, characteristic, open, simple, plain)
23
involuntary(adjective, simple, ordinary, usual, regular)
20
instinctual(adjective, physical, unconscious, primitive)
18
artless(adjective, open, direct, free, simple)
17
simple(adjective, open, easy, clean, honest)
16
intuitive(adjective, characteristic, physical, ordinary, usual)
16
ordinary(adjective, characteristic, simple, reasonable, honest)
15
impulsive(adjective, open, simple, plain, casual)
15
automatic(adjective, simple, ordinary, usual, regular)
14
unsophisticated(adjective, open, simple, clean, honest)
13
direct(adjective, open, free, simple, correct)
13
visceral(adjective, physical, emotional, primitive)
12
open(adjective, calm, free, smooth, simple)
12
straightforward(adjective, open, direct, free, simple)
11
frank(adjective, open, free, simple, easy)
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APASmart Define. (2016). natural thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/natural/thesaurus/synonyms
ChicagoSmart Define. 2016. "natural thesaurus" https://smartdefine.org/natural/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, natural thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/natural/thesaurus/synonyms>.
MLASmart Define. "natural thesaurus" 15 February 2016. Web. 29 September 2026. <https://smartdefine.org/natural/thesaurus/synonyms>