- past participle of undo.
undone
1 Americanadjective
adjective
-
ruined; destroyed
-
unfastened; untied
adjective
Etymology
Origin of undone1
First recorded in 1250–1300; un- 1 ( def. ) + done ( def. )
Origin of undone2
First recorded in 1300–50, for the adjective; un- 2 ( def. ) + done ( def. )
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.
“They have destroyed a lot of buildings to build these outposts, and that is something that can’t be undone, but they could easily leave these giant dirt berms where they are.”
From The Wall Street Journal ● Oct. 9, 2026
The league initially was neutral on Measure J, but “we do not believe a decision voters made at the ballot box should be undone because of an administrative or drafting error,” its statement said.
From Los Angeles Times ● Oct. 1, 2026
"That tragedy cannot be undone," Wisner said, calling for legal reform, proactive regulation and proper governmental oversight.
From BBC ● Sep. 29, 2026
"I understand that my false accusations have caused Mr Carter immense pain, suffering and damage that can never be fully undone."
From Barron's ● Sep. 25, 2026
Aru was used to seeing her dressed like a shabby professor, in a blazer with scuffed elbows and a worn skirt with the hem coming undone.
From "Aru Shah and the End of Time" by Roshani Chokshi
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.