- present perfect of undo.
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.
What distinguishes Mr. Zipperstein’s volume—composed with the tact of a historian who has read the archives and the novels with equal care—is how deliberately it resists the temptations that have undone earlier efforts.
From The Wall Street Journal • Oct. 30, 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
This cellular death was thought to be rapid and permanent, but researchers at Yale University have undone some of that damage in animals which have been dead for an hour.
From BBC • Aug. 3, 2022
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
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