undoing
noun
un·do·ing
ˌən-ˈdü-iŋ 
1
: an act of loosening : unfastening
2
: ruin
also
: a cause of ruin
greed was to prove his undoing
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
Memphis’ Ja Morant and New Orleans’ Zion Williamson represent two more All-Star level players who can be had at a steep discount, largely because of their own undoing with off-court drama impacting on-court performance.
—
Kristian Winfield, New York Daily News, 30 Jan. 2026
Jealousy proves Stiller’s undoing.
—Brian Steinberg, Variety, 28 Jan. 2026
And there's constant like, undoing of images.
—Outside Online, 21 Jan. 2026
McDermott’s failure to reach the Super Bowl with Josh Allen at quarterback became his undoing.
—John Wawrow, Baltimore Sun, 19 Jan. 2026
See All Example Sentences for undoing
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.
Kristian Winfield, New York Daily News, 30 Jan. 2026
Jealousy proves Stiller’s undoing.
—Brian Steinberg, Variety, 28 Jan. 2026
And there's constant like, undoing of images.
—Outside Online, 21 Jan. 2026
McDermott’s failure to reach the Super Bowl with Josh Allen at quarterback became his undoing.
—John Wawrow, Baltimore Sun, 19 Jan. 2026
See All Example Sentences for undoing
Cite this Entry
“Undoing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undoing. Accessed 11 Feb. 2026.
Copy CitationKids Definition
undoing
noun
un·do·ing
ˌən-ˈdü-iŋ
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
Love words? Need even more definitions?
Merriam-Webster unabridged
