from The American Heritage® Dictionary of the English Language, 4th Edition

  • v. Present participle of undo.
  • n. The act of unfastening or loosening.
  • n. Ruin; destruction.
  • n. The act of bringing to ruin.
  • n. A cause or source of ruin; downfall: Greed was his undoing.
  • n. The act of reversing or annulling something accomplished; a cancellation.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. That which defeats.
  • v. Present participle of undo.

from the GNU version of the Collaborative International Dictionary of English

  • n. The reversal of what has been done.
  • n. Ruin.

from The Century Dictionary and Cyclopedia

  • n. The reversal of what has been done: as, there is no undoing of the past.
  • n. Ruin; destruction.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. loosening the ties that fasten something
  • n. an act that makes a previous act of no effect (as if not done)


Sorry, no etymologies found.



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  • “Let's face it. We're undone by each other. And if we're not, we're missing something… despite one's best efforts, one is undone, in the face of the other, by the touch, by the scent, by the feel, by the prospect of the touch, by the memory of the feel.”

    -Judith Butler, Violence, Mourning, & Politics

    December 12, 2014