| aboriginal(adjective, beginning) | |
| beginning(adjective, beginning) | |
| callow(innocent, inexperienced, infant, young, childlike) | |
| fetal(adjective, beginning) | |
| formative(adjective, beginning) | |
| inaugural(adjective, beginning) | |
| introductory(adjective, beginning) | |
| jejune(innocent, inexperienced, young, childlike, childish) | |
| new(adjective, beginning) | |
| primal(adjective, beginning) | |
| primeval(adjective, beginning) | |
| babish | |
| budding(adjective, beginning) | |
| creative(adjective, rational, fantastic, original, resourceful) | |
| early(adjective, beginning) | |
| elementary | |
| foolish | |
| fundamental | |
| girlish | |
| green(adjective, innocent, inexperienced, young, childlike) |
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| APA | Smart Define. (2015). infantile thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/infantile/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "infantile thesaurus" https://smartdefine.org/infantile/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, infantile thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/infantile/thesaurus/synonyms>. |
| MLA | Smart Define. "infantile thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/infantile/thesaurus/synonyms> |