| feeble(adjective, strong, weak, thin, feeble) |
| senile(adjective, physical, feeble, frail, flimsy) |
| decrepit(adjective, weak, thin, delicate, feeble) |
| doddery |
| infirm(adjective, weak, thin, delicate, feeble) |
| shaky(adjective, weak, thin, frail, rickety) |
| tottering(noun, verb, adjective, feeble, frail) |
| old(adjective, feeble, dilapidated, debilitated, deteriorated) |
| aged(adjective, weak, thin, delicate, feeble) |
| crazy(adjective, rickety) |
| frail(adjective, weak, thin, delicate, feeble) |
| gaga |
| staggering(noun, adjective, tottering, wobbling, teetering) |
| weak(adjective, thin, feeble, incompetent, puny) |
| debilitated(adjective, weak, thin, delicate, feeble) |
| faltering(noun, adjective) |
| quavering(adjective, feeble, frail, flimsy, debilitated) |
| superannuated(adjective, feeble, frail, flimsy, dilapidated) |
| anile(adjective, weak, feeble, frail, flimsy) |
| doting(adjective, youth) |