rots

verb
  1. The process of decaying or decomposing, typically due to bacterial or fungal action. verb
    The fruit rots quickly if left out in the sun.
    The wood rots over time when exposed to moisture.
  2. A state or condition of decay or decomposition. noun
    The rot in the basement was caused by a leaky pipe.
    They had to replace the beams due to extensive rot.