had been gangrening

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of gangrene.
  gangrene

  noun

  necrosis or death of soft tissue due to obstructed circulation, usually followed by decomposition and putrefaction.

Related Words

• blight
• corrosion
• decomposition
• degeneration
• deterioration
• disintegration
• disrepair
• extinction
• impairment
• rot