verb (used with object), un·did, un·done, un·do·ing.
Origin of undo
Examples from the Web for undo
But then the question becomes, how do you undo gerrymandering?
And yet, ultimately, the Supreme Court holds the power to uphold or undo what it has taken him years to accomplish.
Underlying all of this legal maneuvering is the social fact that marriages are hard to undo.
The wind and the dust in this climate can undo even the hardiest things.Whatever You Do Someone Will Die. A Short Story About Impossible Choices in Iraq|Nathan Bradley Bethea|August 31, 2014|DAILY BEAST
He was trying to undo the Great Society, and he basically said that in his memoir.
Millner, as mechanically, took one of the virginally cinctured cigars, and began to undo its wrappings.Tales Of Men And Ghosts|Edith Wharton
No healing process can help you here to undo your clumsy surgery and want of skill.
But now nothing could undo or deny that flash of fact, that for a second they had been glad to be interrupted.The Ball and The Cross|G.K. Chesterton
A false move on our part might undo everything and ruin our cause.Walter and the Wireless|Sara Ware Bassett
You might undo the work of weeks, make the patient's ultimate recovery doubtful.The Higher Court|Mary Stewart Daggett
British Dictionary definitions for undo
verb -does, -doing, -did or -done (mainly tr)
Word Origin and History for undo
Old English undon "to unfasten and open" (a window or door), "to unfasten by releasing from a fixed position," from un- (2) + do (v.). The notion is of "to annul something that was done." Related: Undone; undoing.