| unaccustomed(new, raw, inexperienced, inexpert, untrained) |
| unacquainted(new, raw, inexperienced, inexpert, untrained) |
| unaffected(adjective, simple, plain, natural, straightforward) |
| unbaked(adjective, rough, coarse, fresh, original) |
| unbeguiling(adjective, artless) |
| uncomplicated(adjective, simple, pure, natural, straightforward) |
| unconversant(new, coarse, fresh, raw, ignorant) |
| undeceiving(adjective, artless) |
| underdeveloped(inexperienced, young, childish, undeveloped, unformed) |
| undisguised(adjective, artless) |
| unfamiliar with(expression, new, raw, inexperienced, inexpert) |
| uninitiate(adjective, inexperienced, untrained, unschooled, kidder) |
| unrefined(adjective, simple, rough, pure, coarse) |
| unused(new, raw, inexperienced, inexpert, untrained) |
| vernal(adjective, tender, new, little, green) |
| vulnerable(adjective, young, youthful) |
| aboveboard(simple, plain, fresh, innocent, sincere) |
| amateurish(simple, new, natural, raw, whole) |
| apprentice |
| arrested |