Definition of undo
undidplay \ˌən-ˈdid, ˈən-\;
undoneplay \ˌən-ˈdən, ˈən-\;
undoingplay \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
: to come open or apart
undoerplay \ˌən-ˈdü-ər, ˈən-\ noun
Examples of undo in a Sentence
You can't undo the past.
The damage cannot be undone.
He was undone by greed.
Recent Examples of undo from the Web
At a recent dinner party, my fiancé caught me undoing the top button of my jeans at the table.
Maryland Democrats had been pressing Hogan, who is expected to run for reelection in 2018, to weigh in more forcefully against GOP plans to repeal the ACA and undo other parts of President Barack Obama’s legacy.
Rubio says Congress’ other big-ticket item, an overhaul of the nation’s tax system, could undo the remaining Obamacare taxes left in the Senate’s health-care bill.
And Trump has shown a great propensity to undo whatever Obama did, almost without regard for merit.
Both the House and Senate bills eliminate Obamacare’s mandates for people to buy insurance and individuals to provide it, gradually undo an expansion of Medicaid and reduce the size of the federal-state health care program for the poor and disabled.
On April 28, Donald Trump took the first steps to undo those decisions.
Since February, Pruitt has filed a proposal of intent to undo or weaken Obama’s climate-change regulations, known as the Clean Power Plan.
Meanwhile, his fellow Republicans were working to undo the program at home. Republican lawmakers want to prevent new, lower-income Ohio adults from enrolling in Medicaid starting July 1, 2018.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undo.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of undo
before 12th century
UNDO Defined for English Language Learners
Definition of undo for English Language Learners
: to open or release (something) : to unfasten or loosen (something)
: to change or stop the effect of (something)
: to cause the failure of (someone or something)
UNDO Defined for Kids
Definition of undo for Students
Seen and Heard
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