| delicate(adjective, state, dull, strong, light) |
| frail(adjective, state, strong, light, weak) |
| weak(adjective, state, strong, light, soft) |
| feeble(adjective, strong, light, weak, slight) |
| flimsy(adjective, state, strong, light, weak) |
| infirm(adjective, strong, light, weak, slight) |
| insubstantial(adjective, strong, light, weak, slight) |
| decrepit(adjective, strong, light, weak, slight) |
| rickety(adjective, dull, light, weak, slight) |
| unsound(adjective, strong, light, weak, slight) |
| unsubstantial(adjective, strong, light, weak, slight) |
| ailing(adjective, weak, thin, delicate, unstable) |
| faint(adjective, weak, soft, slight, gentle) |
| shaky(adjective, weak, slight, thin, delicate) |
| sickly(adjective, weak, thin, delicate, uncertain) |
| debilitated(adjective, weak, thin, delicate, uncertain) |
| unstable(adjective, weak, delicate, false) |
| unwell(adjective, unstable, shaky, insane) |
| anemic(adjective, weak, poor, delicate, small) |
| sick(adjective, weak, feeble, unhealthy) |