| ingenuous | |
| lamb | |
| leadpipe cinch | |
| lout | |
| mawkish | |
| mere child | |
| monkey | |
| noble savage | |
| oaf | |
| patsy | |
| pigeon | |
| plaything | |
| primitive | |
| prize sap | |
| pushover | |
| rube | |
| sap | |
| saphead | |
| schlemiel | |
| simple |
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| APA | Smart Define. (2015). naif thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/naif/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "naif thesaurus" https://smartdefine.org/naif/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, naif thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/naif/thesaurus/synonyms>. |
| MLA | Smart Define. "naif thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/naif/thesaurus/synonyms> |