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undoing

[uhn-doo-ing] /ʌnˈdu ɪŋ/
noun
1.
the reversing of what has been done; annulling.
2.
a bringing to destruction, ruin, or disaster.
3.
a cause of destruction or ruin.
4.
the act of unfastening or loosing.
5.
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.
Origin
1300-1350
1300-50; Middle English; see undo, -ing1
Related forms
self-undoing, adjective
Synonyms
1. reversal, negation, thwarting.

undo

[uhn-doo] /ʌnˈdu/
verb (used with object), undid, undone, undoing.
1.
to reverse the doing of; cause to be as if never done:
Murder once done can never be undone.
2.
to do away with; erase; efface:
to undo the havoc done by the storm.
3.
to bring to ruin or disaster; destroy:
In the end his lies undid him.
4.
to unfasten by releasing:
to undo a gate; to undo a button.
5.
to untie or loose (a knot, rope, etc.).
6.
to open (a package, wrapping, etc.).
7.
Archaic. to explain; interpret.
Origin
before 900; Middle English; Old English undōn; cognate with Dutch ontdoen. See un-2, do1
Related forms
undoable, adjective
Can be confused
undo, undue.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for undoing
  • Greed is the cancer of mankind, and will be our undoing.
  • Water, the lifeblood of the swamp, proved its undoing.
  • The world wags on with three things: doing, undoing and pretending.
  • He lived to grow rich in possessions, but his wealth was his undoing.
  • The band shall play there yet and neighbor meet neighbor in such social contact as the slum has never known to its undoing.
  • There she was, undoing her hair to wash it, with her arms out through the sleeve-holes of her smock.
  • And in the end the car's strong motor was its undoing.
  • In the field of quantum computing, researchers seek to harness the quantum effects that will be silicon's undoing.
  • The sonnet has staged its own undoing and, doing so, has rendered an eloquent portrait of faith-under-pressure.
  • But the same freezing process that preserves the bodies of many extinct mammals would also be the undoing of cloning endeavours.
British Dictionary definitions for undoing

undoing

/ʌnˈduːɪŋ/
noun
1.
ruin; downfall
2.
the cause of downfall drink was his undoing

undo

/ʌnˈduː/
verb (mainly transitive) -does, -doing, -did, -done
1.
(also intransitive) to untie, unwrap, or open or become untied, unwrapped, etc
2.
to reverse the effects of
3.
to cause the downfall of
4.
(obsolete) to explain or solve
Derived Forms
undoer, noun
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
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Word Origin and History for undoing
undo
O.E. undon "to unfasten and open" (a window or door), "to unfasten by releasing from a fixed position," from un- (2) + do. Undone "not accomplished" is recorded from c.1300; sense of "destroyed" is recorded from mid-14c.; the notion is of "to annul something that was done." Undoing "action of bringing to ruin" is recorded from late 14c.
Online Etymology Dictionary, © 2010 Douglas Harper
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