undo
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
1Other words from undo
- un·do·a·ble, adjective
Words that may be confused with undo
- undo , undue
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use undo in a sentence
It undoes some of the progress made after 9/11 to push information out of agency silos and share it widely across the government.
Then Yvette, who is married to an older intellectual, undoes her skirt and waits for Salim in his bed.
Every gain on the wrong side undoes the effect of many conquests on the right.
Your Mind and How to Use It | William Walker AtkinsonIt undoes in a moment all that we have accomplished in a long while.
Health Through Will Power | James J. WalshThen he goes to the tent, undoes a hook, and again stands gazing over the sea; then turns round, and resumes his walk as before.
Fridtjof Nansen | Jacob B. Bull
Again the man on the watch arrests his steps; he undoes another hook in the tent.
Fridtjof Nansen | Jacob B. BullBut now let us wait and see what this winter does or undoes—while God does His part for good, as we know.
The Letters of Robert Browning and Elizabeth Barrett Barrett, Vol. 1 (of 2) 1845-1846 | Robert Browning and Elizabeth Barrett Barrett
British Dictionary definitions for undo
/ (ʌnˈduː) /
(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
Derived forms of undo
- 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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