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- Dictionaryundo/ʌnˈduː/
verb
- 1. unfasten, untie, or loosen (something): "the knot was difficult to undo" Similar Opposite
- 2. cancel or reverse the effects or results of (a previous action or measure): "there wasn't any way Evelyn could undo the damage" Similar Opposite
noun
- 1. a feature of a computer program that allows a user to cancel or reverse the last command executed: "the undo command"
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to unfasten something that is closed or tied: He undid the top button of his shirt and loosened his tie. undo verb [T] (REMOVE EFFECTS) to remove the effects of something that happened earlier: It’s difficult to undo the damage caused by a father who abandons his child.
1. : to open or loose by releasing a fastening. 2. : to make of no effect or as if not done : make null : reverse. 3. a. : to ruin the worldly means, reputation, or hopes of. a politician undone by scandal. b. : to disturb the composure of : upset. she's come undone. c. : seduce sense 3. intransitive verb.
Undo definition: to reverse the doing of; cause to be as if never done. See examples of UNDO used in a sentence.
UNDO meaning: 1. to unfasten something that is fastened or tied: 2. to remove the good or bad effects of an…. Learn more.
If you undo something that is closed, tied, or held together, or if you undo the thing holding it, you loosen or remove the thing holding it.
undo something to cancel the effect of something. He undid most of the good work of the previous manager. It's not too late to try and undo some of the damage. UNDO (= a command on a computer that cancels the previous action) Just select ‘Edit’ and ‘Undo’ to cancel the previous action.
1. To reverse or erase; annul: impossible to undo the suffering caused by the war. 2. To untie, disassemble, or loosen: undo a shoelace. 3. To open (a parcel, for example); unwrap. 4. a. To cause the ruin or downfall of; destroy. b. To throw into confusion; unsettle. v.intr. To come open or unfastened. un·do′er n.
