unravel in WordNet English dictionary

1. disentangle
   "can you unravel the mystery?"
   ravel  unravel  ravel out 
   
2. become undone
   "the sweater unraveled"
   run  unravel 
   
3. become or cause to become undone by separating the fibers or threads of
   "unravel the thread"
   unravel  unknot  unscramble  untangle  unpick