| puerile(adjective, weak, like, green, inexperienced) |
| childish(adjective, like, tender, silly, inexperienced) |
| infantile(adjective, like, innocent, inexperienced, infant) |
| immature(adjective, like, limited, innocent, inexperienced) |
| juvenile(adjective, weak, like, tender, inexperienced) |
| infantine(adjective, weak, tender, inexperienced, infant) |
| baby(adjective, weak, like, tender, little) |
| childlike(adjective, youth) |
| jejune(innocent, inexperienced, young, childlike, childish) |
| young(adjective, limited, innocent, meager, inexperienced) |
| mini(adjective, light, slight, limited, amount) |
| adolescent(adjective, innocent, inexperienced, young, childlike) |
| boyish(adjective, infant) |
| foolish(adjective, like) |
| infant |
| kittenish(adjective, infant) |
| little(adjective, light, slight, amount, size) |
| newborn |
| silly(adjective, like) |
| youthful(adjective, weak, tender, little, green) |