Definition of decaying in US English:

decaying

adjective

  • 1Rotting or decomposing through the action of bacteria and fungi.

    ‘the odor of decaying fish’
    1. 1.1 Falling into disrepair; deteriorating.
      ‘old decaying buildings’
    2. 1.2 Declining in quality, power, or vigor.
      ‘a decaying industry’

Pronunciation

decaying

/dəˈkeɪɪŋ//dəˈkāiNG/