| immature(adjective, stupid, raw, innocent, inexperienced) |
| childish(adjective, silly, foolish, trivial, green) |
| silly(adjective, foolish, stupid, fantastic, trivial) |
| juvenile(adjective, raw, trivial, inexperienced, young) |
| foolish(adjective, dull, silly, stupid, fantastic) |
| babyish(adjective, weak, like, tender, green) |
| infantile(adjective, innocent, inexperienced, infant, young) |
| jejune(adjective, raw, innocent, inexperienced, young) |
| fatuous(adjective, silly, foolish, stupid, fantastic) |
| youthful(adjective, weak, new, green, inexperienced) |
| adolescent(adjective, innocent, inexperienced, young, immature) |
| young(adjective, raw, innocent, inexperienced, young) |
| boyish(adjective, infant, young, youthful) |
| frivolous(adjective, slight, poor, silly, stupid) |
| callow(adjective, weak, green, inexperienced, infant) |
| green(adjective, weak, informal, new, raw) |
| ridiculous(adjective, silly, foolish, stupid, fantastic) |
| goofy(adjective, silly, foolish, fantastic, unwise) |
| infantine(adjective, weak, tender, innocent, green) |
| trivial(adjective, dull, slight, poor, silly) |