undo
verb (used with object)
to reverse the doing of; cause to be as if never done.
have undone
-
present perfectof undo.present perfect
Used to describe actions that started in the past and continue into or have direct relevance to the present.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Welty balked at this suggestion, which would have undone a carefully constructed scene: “Ugh! How far could such ‘editing’ lead?
From The Wall Street Journal ● Nov. 27, 2025
One of the ECB's top policymakers, Isabel Schnabel, also cautioned in a speech earlier in the day that recent falls in "risk-free rates" may have undone some of the ECB's work.
From Reuters ● Aug. 31, 2023
Still, such suits — or the threats of them — have undone policies in some instances.
From Washington Post ● Apr. 21, 2023
The reforms would have undone much of the market opening in power generation carried out by his predecessor in 2013, but also raised concerns among U.S. officials and companies.
From Seattle Times ● Apr. 18, 2022
Had I not taken the precaution of posting guards upon her door, Viserys might have undone years of planning.”
From "A Dance with Dragons" by George R. R. Martin
