undoer

Noun
  1. A seducer who ruins a woman (synset 110757374)
    "she awoke in the arms of her cruel undoer"
  2. A person who unfastens or unwraps or opens (synset 110757088)
    "children are talented undoers of their shoelaces"
  3. A person who destroys or ruins or lays waste to (synset 110028370)
    "a destroyer of the environment"; "jealousy was his undoer"; "uprooters of gravestones"

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