Answer: crumbling

AnswerCrossword Clue
crumblingCause (something) to break apart into small fragments
crumblingCRUMBLE, to break up and fall away
crumbling(of an organization, relationship, or structure) Disintegrate gradually over a period of time
crumblingBreak or fall apart into small fragments, esp. over a period of time as part of a process of deterioration