the reversing of what has been done; annulling.
a bringing to destruction, ruin, or disaster.
a cause of destruction or ruin.
the act of unfastening or loosing.
Psychiatry. an unconscious defense mechanism through which an attempt is made to reverse a psychologically unacceptable act by doing its opposite, usually repetitiously, in order to relieve anxiety.
- self-un·do·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use undoing in a sentence
The undoing of toxic “forever chemicals” may be found in products in your pantry.Just 3 ingredients can quickly destroy widely used PFAS ‘forever chemicals’ | Nikk Ogasa | June 3, 2022 | Science News
Yet understanding the minute physical processes behind the undoing of memory could help researchers understand more about this most painful symptom of the disease, and maybe even find ways to slow or stop it.
These turtles’ land-based lifestyle may have also been their undoing.A fossilized egg laid by an extinct, human-sized turtle holds a rare jackpot | Monroe Hammond | August 18, 2021 | Popular-Science
There is no silver bullet for undoing centuries of biased overpolicing.
His undoing came because he refused to grant political rights to the large middle class that he himself created.
Dear God… help us to help ourselves before we become our own undoing.‘Why Have I Lost Control?’: Cory Booker in ’92 on Rodney King Echoes Ferguson | Cory Booker | November 26, 2014 | THE DAILY BEAST
It was the most violent day in the history of Ukraine since Soviet times and it proved to be the undoing of the Yanukovych regime.Photographs Expose Russian-Trained Killers in Kiev | Jamie Dettmer | March 30, 2014 | THE DAILY BEAST
He announced the undoing of what should have never been done.In New Documents, the Bridgegate Cover Story Unravels | Michael Daly | January 11, 2014 | THE DAILY BEAST
Boosting spending and undoing a chunk of the sequester is likely to have a bigger impact on the still-ailing job market.With the Ryan-Murray Deal, Washington Stops Hurting the Economy | Daniel Gross | December 11, 2013 | THE DAILY BEAST
And Friedman presents herself as undoing any destruction she's caused.
He added ‘that he had rather live as a felon or a rebel than adventure his undoing for the Queen.’Ireland Under the Tudors, Vol. II (of 3) | Richard Bagwell
The visit to the theater was the undoing of all the good work accomplished, nor could the result have been foreseen.The Woman Gives | Owen Johnson
Then stood he up on his feet & she arose likewise, and Sigrid said, This might be thy undoing.The Sagas of Olaf Tryggvason and of Harald The Tyrant (Harald Haardraade) | Snorri Sturluson
And no less in doing things than undoing them afterwards (when that has been necessary) have I planned to the very last minuti.In Accordance with the Evidence | Oliver Onions
Smith was undoing and inspecting the parcels, having placed the syphon and fruit on the table.Over the Sliprails | Henry Lawson
British Dictionary definitions for undoing
the cause of downfall: drink was his undoing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012