undid
ˌən-ˈdid 
ˈən-
; undone
ˌən-ˈdən
ˈən-
; undoing
ˌən-ˈdü-iŋ
ˈən-
; undoes
ˌən-ˈdəz,
ˈən-
1
: to open or loosen by releasing a fastening
undid her jacket
2
: to make of no effect or as if not done : make null : reverse
The damage cannot be undone.
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
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
Similarly, Democrats have largely been unable to undo Republicans’ tax cuts.
—
David Goldman, CNN Money, 4 Dec. 2025
The offense went 1-of-5 inside the red zone, undone by their inability to punch the ball across the goal line.
—Andrew Callahan, Boston Herald, 3 Dec. 2025
But these steps are not nearly enough to undo the harm caused by thick layers of overregulation and taxation.
—Austin Gae, Oc Register, 3 Dec. 2025
But that won’t undo the haphazard nature of these first two episodes.
—Fran Hoepfner, Vulture, 2 Dec. 2025
See All Example Sentences for undo
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David Goldman, CNN Money, 4 Dec. 2025
The offense went 1-of-5 inside the red zone, undone by their inability to punch the ball across the goal line.
—Andrew Callahan, Boston Herald, 3 Dec. 2025
But these steps are not nearly enough to undo the harm caused by thick layers of overregulation and taxation.
—Austin Gae, Oc Register, 3 Dec. 2025
But that won’t undo the haphazard nature of these first two episodes.
—Fran Hoepfner, Vulture, 2 Dec. 2025
See All Example Sentences for undo
Cite this Entry
“Undo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undo. Accessed 6 Dec. 2025.
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