undo

play
verb un·do \ˌən-ˈdü, ˈən-\

Definition of undo

undid

play \ˌən-ˈdid, ˈən-\;

undone

play \ˌən-ˈdən, ˈən-\;

undoing

play \ˌən-ˈdü-iŋ, ˈən-\
  1. transitive verb
  2. 1 :  to open or loose by releasing a fastening

  3. 2 :  to make of no effect or as if not done :  make null :  reverse

  4. 3a :  to ruin the worldly means, reputation, or hopes of a politician undone by scandalb :  to disturb the composure of :  upset she's come undonec :  seduce 3

  5. intransitive verb
  6. :  to come open or apart

undoer

play \ˌən-ˈdü-ər, ˈən-\ noun

Examples of undo in a Sentence

  1. You can't undo the past.

  2. The damage cannot be undone.

  3. He was undone by greed.

Recent Examples of undo from the Web

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Before 12th Century

First Known Use of undo

before 12th century


UNDO Defined for English Language Learners

undo

play
verb un·do \ˌən-ˈdü, ˈən-\

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

undo

play
verb un·do \ˌən-ˈdü\

Definition of undo for Students

undid

\-ˈdid\;

undone

\-ˈdən\;

undoing

\-ˈdü-iŋ\;

undoes

\-ˈdəz\
  1. 1 :  untie 2, unfasten Can you undo this knot?

  2. 2 :  to cancel the effect of :  reverse The damage cannot be undone.

  3. 3 :  to cause the ruin or failure of He was undone by greed.



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to give up a position of power

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