18
accustomed(adjective, new, common, ordinary, usual)
18
artless(adjective, open, direct, free, simple)
18
unaffected(adjective, calm, open, smooth, simple)
18
wild(adjective, simple, rough, physical, violent)
17
ingenuous(adjective, open, direct, free, simple)
17
simple(adjective, open, easy, clean, honest)
17
true(adjective, open, simple, correct, right)
17
plain(adjective, open, direct, free, simple)
16
intuitive(adjective, characteristic, physical, ordinary, usual)
16
ordinary(adjective, characteristic, simple, reasonable, honest)
16
fresh(adjective, feature, state, food, property)
15
impulsive(adjective, open, simple, plain, casual)
15
automatic(adjective, simple, ordinary, usual, regular)
15
customary(adjective, simple, reasonable, sensible, new)
15
fundamental(adjective, characteristic, simple, material, basic)
15
knee-jerk(adjective, inside, instinctive, interior, automatic)
15
lifelike(adjective, real, realistic, accurate, truthful)
14
easy(adjective, calm, open, direct, free)
14
common(adjective, characteristic, simple, pure, new)
14
pure(adjective, simple, correct, right, clean)
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APASmart Define. (2016). natural thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/natural/thesaurus/synonyms
ChicagoSmart Define. 2016. "natural thesaurus" https://smartdefine.org/natural/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, natural thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/natural/thesaurus/synonyms>.
MLASmart Define. "natural thesaurus" 15 February 2016. Web. 24 September 2026. <https://smartdefine.org/natural/thesaurus/synonyms>