undoer

Noun

• a person who destroys or ruins or lays waste to
  • a destroyer of the environment
    
  • jealousy was his undoer
    
  • uprooters of gravestones
    

• a person who unfastens or unwraps or opens
  • children are talented undoers of their shoelaces
    

• a seducer who ruins a woman
  • she awoke in the arms of her cruel undoer
    

Related words

• Synonyms: 
  destroyer , ruiner , waster , uprooter , opener , unfastener , untier