| penetrating(adjective, shrill) |
| rickety(adjective, weakness, feeble, frail, flimsy) |
| shrieking(adjective, shrill) |
| squealing(adjective, shrill) |
| weak(adjective, feeble, dilapidated, debilitated, deteriorated) |
| weakly(adjective, feeble, frail, flimsy, debilitated) |
| whining(adjective, shrill) |
| whistling(adjective, shrill) |
| aged(adjective, feeble, old, frail, venerable) |
| antiquated(adjective, feeble, old, gray, venerable) |
| broken-down(adjective, feeble, dilapidated, debilitated, deteriorated) |
| buckram(adjective, hard, firm, solid, stiff) |
| creak |
| flimsy(adjective, weakness, feeble, frail, debilitated) |
| frail(adjective, weakness, feeble, flimsy, debilitated) |
| harsh(adjective, shrill) |
| high-pitched(adjective, shrill) |
| insubstantial(adjective, weakness, feeble, frail, flimsy) |
| noisy(adjective, shrill) |
| raucous(adjective, shrill) |