crumble phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic verb 
crumbles, crumbled, crumbling

1. to (cause to) break into small pieces 

   She nervously crumbled the bread between her fingers. [T]
   The cliffs on which the houses are built are starting to
crumble. [I]
  
FIGURATIVE Support for the government is crumbling (=becoming gradually weaker). [I]


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