| diseased(unstable, ill, shaky, insane, unhealthy) |
| doddering(adjective, weak, thin, delicate, feeble) |
| drooping(weakness, dizzy, giddy) |
| effete(adjective, weak, thin, delicate, uncertain) |
| enervated(adjective, weak, thin, delicate, uncertain) |
| ephemeral(light, weak, slight, imaginary, flimsy) |
| fallible |
| finespun(adjective, light, weak, soft, gentle) |
| fly-by-night(light, weak, slight, imaginary, flimsy) |
| gossamery(light, fine, thin, small, loose) |
| helpless(adjective, weak, thin, delicate, shaky) |
| hothouse |
| imperfect |
| incapacitated(feeble, frail, flimsy, dilapidated, debilitated) |
| indisposed |
| insignificant(adjective, weak, small, feeble, trivial) |
| lacerable |
| lank(adjective, dull, light, slight, fine) |
| lean(dull, light, slight, fine, thin) |
| lightweight(dull, light, slight, fine, thin) |