sagging
Definitions
Hanging or sinking downward, especially from weight, pressure, or lack of support.
Losing firmness, elasticity, or vigor; becoming droopy or flaccid.
Examples
The old porch was sagging under the weight of the heavy winter snow.
She noticed the sagging shelf in the pantry and decided it needed immediate repair.
After years of neglect, the sagging roof of the barn finally collapsed during the storm.