undid
ˌən-ˈdid 
ˈən-
; undone
ˌən-ˈdən
ˈən-
; undoing
ˌən-ˈdü-iŋ
ˈən-
1
: to open or loose by releasing a fastening
2
: to make of no effect or as if not done : make null : reverse
3
a
: to ruin the worldly means, reputation, or hopes of
a politician undone by scandal
b
: to disturb the composure of : upset
she's come undone
c
: to come open or apart
Synonyms
Examples of undo in a Sentence
You can't undo the past.
The damage cannot be undone.
He was undone by greed.
Recent Examples on the Web
This reappearance did not undo the censorship of the World’s Fair mural.
—
Richard Meyer, Artforum, 1 Feb. 2025
In the past two weeks, the Trump administration has spent a remarkable amount of time undoing health orders—not just the Biden administration’s rules, but also its own jarring crackdown.
—Kristen V. Brown, The Atlantic, 31 Jan. 2025
Many have criticized the decision as a concerted initiative to undo progress toward racial equity, something previously upheld by both Democratic and Republican politicians.
—Alex Greenberger, ARTnews.com, 30 Jan. 2025
That's because an executive action, on its own, can't undo or overwrite laws.
—Camila Domonoske, NPR, 30 Jan. 2025
See all Example Sentences for undo 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Richard Meyer, Artforum, 1 Feb. 2025
In the past two weeks, the Trump administration has spent a remarkable amount of time undoing health orders—not just the Biden administration’s rules, but also its own jarring crackdown.
—Kristen V. Brown, The Atlantic, 31 Jan. 2025
Many have criticized the decision as a concerted initiative to undo progress toward racial equity, something previously upheld by both Democratic and Republican politicians.
—Alex Greenberger, ARTnews.com, 30 Jan. 2025
That's because an executive action, on its own, can't undo or overwrite laws.
—Camila Domonoske, NPR, 30 Jan. 2025
See all Example Sentences for undo
Dictionary Entries Near undo
Cite this Entry
“Undo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undo. Accessed 11 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share