Keening

The keening stench of decay emanated from the garbage dumpster, making it difficult to pass by.

The old haunted house echoed with the keening cries of unseen spirits.

The patient lay in the hospital bed, his keening thoughts consumed by the desire to be healthy again.

The keening shriek of the fireworks lit up the night sky.

The old television emitted a high-pitched keening noise whenever it was turned on.