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
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
The choice can cement—or undo—a successful entrepreneur’s legacy.
—
Ben Francois, Harvard Business Review, 5 Sep. 2025
In a second ruling, McCormick decided that an additional shareholder vote on the compensation package -- even if made with full knowledge of the initial problems surrounding the negotiation of the agreement -- could not undo those problems.
—Max Zahn, ABC News, 5 Sep. 2025
Kail, 48, complemented his wife perfectly in a simple black suit, white button-down shirt — with a few buttons undone for a casual touch — and shiny black shoes.
—Starr Bowenbank, PEOPLE, 4 Sep. 2025
In 2000, the World Health Organization declared measles eliminated in the United States, a public health triumph that has been undone in less than eight months under the disastrous leadership of Secretary Kennedy.
—CNN Money, 4 Sep. 2025
See All Example Sentences for undo
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Ben Francois, Harvard Business Review, 5 Sep. 2025
In a second ruling, McCormick decided that an additional shareholder vote on the compensation package -- even if made with full knowledge of the initial problems surrounding the negotiation of the agreement -- could not undo those problems.
—Max Zahn, ABC News, 5 Sep. 2025
Kail, 48, complemented his wife perfectly in a simple black suit, white button-down shirt — with a few buttons undone for a casual touch — and shiny black shoes.
—Starr Bowenbank, PEOPLE, 4 Sep. 2025
In 2000, the World Health Organization declared measles eliminated in the United States, a public health triumph that has been undone in less than eight months under the disastrous leadership of Secretary Kennedy.
—CNN Money, 4 Sep. 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 9 Sep. 2025.
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