undoing

noun

un·​do·​ing ˌən-ˈdü-iŋ How to pronounce undoing (audio)
Synonyms of undoingnext
1
: an act of loosening : unfastening
2
: ruin
also : a cause of ruin
greed was to prove his undoing
3

Examples of undoing in a Sentence

My quick temper was my undoing. His quick temper helped lead to his undoing. The incident resulted in her undoing.
Recent Examples on the Web
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.
The repeal eliminates all greenhouse gas emissions standards for cars and trucks and could unleash a broader undoing of climate regulations on stationary sources such as power plants and oil and gas facilities, experts say. Matthew Daly The Associated Press, Arkansas Online, 19 Feb. 2026 The repeal eliminates all greenhouse gas emissions standards for cars and trucks and could unleash a broader undoing of climate regulations on stationary sources such as power plants and oil and gas facilities, experts say. Matthew Daly, Los Angeles Times, 18 Feb. 2026 Rose’s attempts to make a success of her life will be her undoing, however, a fate that begins to unfold when a neighboring landowner offers her his daughter, Suzanna (Caro Braun). Damon Wise, Deadline, 16 Feb. 2026 Legal challenges are certain for an action that repeals all greenhouse gas emissions standards for cars and trucks, and could unleash a broader undoing of climate regulations on stationary sources such as power plants and oil and gas facilities, experts say. Matthew Daly, Chicago Tribune, 12 Feb. 2026 See All Example Sentences for undoing

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of undoing was in the 14th century

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Cite this Entry

“Undoing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undoing. Accessed 22 Feb. 2026.

Kids Definition

undoing

noun
un·​do·​ing ˌən-ˈdü-iŋ How to pronounce undoing (audio)
1
: an act or instance of unfastening
2
a
: ruin entry 1 sense 1
parental neglect helped lead to their undoing
b
: a cause of ruin
my quick temper was my undoing
3

More from Merriam-Webster on undoing

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