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
Tegna has named Fox Television Stations veteran Patrick Paolini CEO as the station group looks to resolve litigation seeking to undo its merger with larger rival Nexstar.
—
Dade Hayes, Deadline, 26 May 2026
For most of her career, Gauff has rarely displayed anything close to a meltdown, rarely appeared to wrestle with the emotional demons that so often undo tennis players.
—Matthew Futterman, New York Times, 26 May 2026
Ryan Oksenhorn, co-founder of drone delivery startup Zipline, wrote in a post on X last month that his company was evaluating GitLab and Atlassian's Bitbucket after GitHub accidentally undid code revisions, and subsequently provided instructions on recovering changes.
—Jordan Novet, CNBC, 22 May 2026
Specifically, the 2025 One Big Beautiful Bill Act undid parts of the Biden-era Inflation Reduction Act that had offered tax incentives for wind and solar.
—David Condos, NPR, 19 May 2026
See All Example Sentences for undo
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Dade Hayes, Deadline, 26 May 2026
For most of her career, Gauff has rarely displayed anything close to a meltdown, rarely appeared to wrestle with the emotional demons that so often undo tennis players.
—Matthew Futterman, New York Times, 26 May 2026
Ryan Oksenhorn, co-founder of drone delivery startup Zipline, wrote in a post on X last month that his company was evaluating GitLab and Atlassian's Bitbucket after GitHub accidentally undid code revisions, and subsequently provided instructions on recovering changes.
—Jordan Novet, CNBC, 22 May 2026
Specifically, the 2025 One Big Beautiful Bill Act undid parts of the Biden-era Inflation Reduction Act that had offered tax incentives for wind and solar.
—David Condos, NPR, 19 May 2026
See All Example Sentences for undo
Cite this Entry
“Undo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undo. Accessed 27 May. 2026.
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