| feeble(adjective, strong, weak, weakness, thin) |
| weak(adjective, strong, disease, weakness, thin) |
| infirm(adjective, strong, weak, thin, delicate) |
| feebly(adverb, badly, poorly, carelessly, faintly) |
| puny(adjective, strong, weak, thin, delicate) |
| sickly(adjective, adverb, weak, thin, delicate) |
| decrepit(adjective, strong, weak, disease, thin) |
| sapless(adjective, weak, weakness, thin, delicate) |
| fragile(adjective, strong, weak, thin, delicate) |
| flimsy(adjective, strong, weak, poor, delicate) |
| frail(adjective, strong, weak, thin, delicate) |
| infirmly(adverb, irresolutely, feebly) |
| insubstantial(adjective, strong, weak, thin, delicate) |
| faintly(adverb, feebly) |
| frailly(adverb, feebly) |
| slightly |
| softly(adverb, feebly) |
| powerlessly(adverb, feebly, impotently) |
| debile(adjective, weakness) |
| faint(adjective, weak, thin, delicate, uncertain) |