| weak(adjective, state, mean, bad, strong) |
| feeble(adjective, mean, bad, strong, light) |
| fragile(adjective, state, strong, light, weak) |
| delicate(adjective, state, mean, bad, strong) |
| flimsy(adjective, state, strong, light, weak) |
| infirm(adjective, mean, bad, strong, light) |
| decrepit(adjective, strong, light, weak, slight) |
| unsubstantial(adjective, strong, light, weak, slight) |
| slight(adjective, light, weak, soft, gentle) |
| frangible(adjective, state, hard, weak, structure) |
| debilitated(adjective, mean, bad, weak, thin) |
| unsound(adjective, strong, light, weak, slight) |
| puny(adjective, strong, light, weak, slight) |
| rickety(adjective, mean, bad, weak, slight) |
| sickly(adjective, weak, thin, delicate, uncertain) |
| insubstantial(adjective, strong, light, weak, slight) |
| tender(adjective, weak, soft, gentle, delicate) |
| vulnerable(adjective, weak, unstable, infirm, fragile) |
| brittle(adjective, hard, weak, stiff, flimsy) |
| thin(adjective, light, weak, slight, delicate) |