| unacquainted(adjective, kindly, ignorant, naive, unknowing) |
| unartificial(adjective, kindly, ignorant, naive, unknowing) |
| unburdensome(adjective, calm, light, soft, informal) |
| uncool(adjective, kindly, ignorant, naive, unknowing) |
| undesigning |
| unfamiliar(adjective, kindly, ignorant, naive, unknowing) |
| unguarded |
| unhurtful(adjective, kindly, ignorant, naive, unknowing) |
| uninjurious(adjective, kindly, ignorant, naive, unknowing) |
| unjaded(adjective, simple, friendly, plain, fresh) |
| unmalicious(adjective, kindly, ignorant, naive, unknowing) |
| unobjectionable(adjective, kindly, ignorant, naive, unknowing) |
| unoffensive(adjective, kindly, ignorant, naive, unknowing) |
| unoppressive(adjective, calm, light, soft, informal) |
| unpretentious(adjective, simple, plain, fresh, innocent) |
| unstudied(adjective, kindly, ignorant, naive, unknowing) |
| untaught(adjective, simple, plain, fresh, innocent) |
| well-intentioned(adjective, kindly, ignorant, naive, unknowing) |
| wellmeant(adjective, kindly, ignorant, naive, unknowing) |
| without suspicion |