verb

molder

MOHL-der/ˈməʊldər/

To decay slowly.

The abandoned chest molders in the damp corner, its lower boards crumbling.

An abandoned wooden storage chest slowly rots in a damp corner: its lower boards soften and crumble, pale fungal growth spreads through the grain, and decayed wood fragments collect beneath undisturbed cobwebs.
Etymology

Molder probably pictures decay as turning into loose earth or dust. On this analysis, its ending marks a repeated process, fitting the gradual crumbling of something left to decay.

More examples

  • Fallen leaves molder beneath the trees all winter.
  • The letters had moldered for decades in a leaky trunk.
  • Her ambitious plans molder while she waits for funding.

Forms

molder · molders · moldered · moldering

Similar words

decay
A general term for breaking down, without emphasizing slowness.
rot
Usually suggests organic matter decomposing, often with an unpleasant smell.