75 entries under plain topic. ×

67
innocent(noun, adjective, person, simple, knowledge)
49
unsophisticated(adjective, simple, easy, clean, honest)
44
ingenuous(adjective, open, direct, free, simple)
44
artless(adjective, open, direct, free, simple)
42
simple(adjective, dull, gentle, clean, honest)
40
guileless(adjective, open, direct, free, simple)
34
green(adjective, weak, simple, clean, honest)
31
unaffected(adjective, calm, open, simple, easy)
29
candid(adjective, open, free, simple, honest)
28
natural(adjective, calm, open, direct, free)
27
trusting(adjective, calm, person, light, simple)
26
childlike(adjective, open, weak, simple, easy)
23
sincere(adjective, open, direct, free, simple)
19
easy(adjective, calm, open, direct, free)
17
frank(noun, adjective, open, free, simple)
15
open(adjective, calm, direct, free, simple)
14
unpretentious(adjective, calm, open, simple, easy)
13
honest(adjective, open, free, simple, easy)
13
unschooled(adjective, simple, clean, honest)
12
unstudied(adjective, open, simple, easy, clean)
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APASmart Define. (2016). naïve thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/na%C3%AFve/thesaurus/synonyms
ChicagoSmart Define. 2016. "naïve thesaurus" https://smartdefine.org/na%C3%AFve/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, naïve thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/na%C3%AFve/thesaurus/synonyms>.
MLASmart Define. "naïve thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/na%C3%AFve/thesaurus/synonyms>