undoer

noun

1. a person who destroys or ruins or lays waste to
   1. a destroyer of the environment
   2. jealousy was his undoer
   3. uprooters of gravestones

   Synonym:    destroyerruinerwasteruprooter

2. a person who unfastens or unwraps or opens
   1. children are talented undoers of their shoelaces

   Synonym:    openerunfasteneruntier

3. a seducer who ruins a woman
   1. she awoke in the arms of her cruel undoer