- to reverse the doing of; cause to be as if never done: Murder once done can never be undone.
- to do away with; erase; efface: to undo the havoc done by the storm.
- to bring to ruin or disaster; destroy: In the end his lies undid him.
- to unfasten by releasing: to undo a gate; to undo a button.
- to untie or loose (a knot, rope, etc.).
- to open (a package, wrapping, etc.).
- Archaic. to explain; interpret.
Origin of undo
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for undoes
It undoes some of the progress made after 9/11 to push information out of agency silos and share it widely across the government.WikiLeaks’ Harmful New Dump
August 31, 2011
Then Yvette, who is married to an older intellectual, undoes her skirt and waits for Salim in his bed.Naipaul's Art of Darkness
December 26, 2008
The deed done to Helen strikes every Greek man till he undoes it.Homer's Odyssey
Denton J. Snider
Whichever of these courses we pursue, the hurry with which we pursue it undoes us.The Complete Essays of John Galsworthy
A day like this undoes the work of a hundred numbers of the Jacobin papers.The Red and the Black
(He bends again and undoes the buttons of Stephen's waistcoat) To breathe.Ulysses
The very thought of it undoes me—with an absolute shock of sheepishness.The Return
Walter de la Mare
- (also intr) to untie, unwrap, or open or become untied, unwrapped, etc
- to reverse the effects of
- to cause the downfall of
- obsolete to explain or solve
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
Word Origin and History for undoes
Online Etymology Dictionary, © 2010 Douglas Harper