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   undo

   /ʌnˈduː/

   verb

   • 1. unfasten, untie, or loosen (something): "the knot was difficult to undo" Similar unfastenunbuttonunhookuntieunlaceunbindunfetterunshackleunmanacleunbridleunlockunboltuncoupleunhitchunlinkunclickloosenloosedisentangledisentwineextricatereleasedetachfreeset freeliberateopenunsealunwraplet outdisconnectdisjoindisengagedisuniteseparateOpposite fastendo up
   • 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 revokeoverruleoverturnrepealrescindreverseretracttake backrule againstdisallowvetocountermandcancelannulnullifyrender null and voidinvalidaterender invalidnegateabrogatedisestablishmake ineffectiveset asidedo away withwipe outbring to an endavoidvacatearchaic:recallrare:disannulOpposite ratify
   • ▪ cancel (the last command executed by a computer): "you can frequently undo the error if you notice it in time"
   • 3. cause the downfall or ruin of: formal "Iago's hatred of women undoes him" Similar ruinundermineput an end toput at risksubvertoverturntopplescupperscotchsabotagespoilmess upmake a mess ofquashsquelchcrushharmcrippleimpairmardestroydevastateplay havoc withwrecksmashshatterannihilateeradicateobliteratedefeatcancel outneutralizerender ineffectivethwartupsetfoilfrustratehamperhinderobstructinformal:botchblowput the kibosh onfoul upmuck uplouse upblow a hole indo forcock upthrow a spanner in the works ofrain on someone's paradethrow a monkey wrench in the works ofvulgar slang:fuck upbugger upballs uparchaic:bring to naughtOpposite furtherenhancehelp

   noun

   • 1. a feature of a computer program that allows a user to cancel or reverse the last command executed: "the undo command"

   Word Origin Old Englishundōn (see un-2, do1).

   Scrabble Points: 5

   • U

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   • N

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   • D

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   • O

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2. People also ask

   What does undo mean in English?

   • , un·did [uhn-, did],un·done [uhn-, duhn],un·do·ing. Murder once done can never be undone. to undo the havoc done by the storm. In the end his lies undid him. to undo a gate; to undo a button. to untie or loose (a knot, rope, etc.). to open (a package, wrapping, etc.). Archaic. to explain; interpret. obsolete.

   UNDO Definition & Meaning | Dictionary.com

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   How do you undo something?

   • 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. Just select ‘Edit’ and ‘Undo’ to cancel the previous action. [usually passive] undo somebody/something (formal) to make somebody/something fail

   undo verb - Definition, pictures, pronunciation and usage notes

   www.oxfordlearnersdictionaries.com/definition/english/undo

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   What is undo information?

   • Undo information is generated by the database as you make modifications to data so that the data can be put back the way it was before the modifications took place. This might be done in support of multiversioning, or in the event the transaction or statement you are executing fails for any reason, or if we request it with a ROLLBACK statement.

   Redo and Undo | SpringerLink

   link.springer.com/chapter/10.1007/978-1-4842-7499-6_9

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   What is undo ® used for?

   • UNDO®is used to remove/lighten unwanted permanent make-up, scalp micropigmentation & small to medium sized body tattoos. UNDO®can be used on all skin types & ink colors and is safe to use in delicate areas, such as the eyes.

   Non-Laser Tattoo Removal Online Training | UNDO Removal

   www.undoremoval.com/

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3. dictionary.cambridge.org › dictionary › englishUNDO | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   Undo means to unfasten something or to remove the effects of something. Learn how to use undo in different contexts with sentences from the Cambridge English Corpus and other sources.

4. www.dictionary.com › browse › undoUNDO Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › undo

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   Undo definition: to reverse the doing of; cause to be as if never done. See examples of UNDO used in a sentence.

5. www.merriam-webster.com › dictionary › undoUndo Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › undo

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   Learn the meaning, synonyms, examples, and history of the verb undo, which means to open, reverse, or ruin something. See how to use undo in a sentence and how it differs from un- prefix.

6. dictionary.cambridge.org › us › dictionaryUNDO | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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   Learn the meaning of undo as a verb in English, with examples of how to use it in sentences. Find out how to say undo in different languages, such as Chinese, Spanish and Portuguese.

7. www.oxfordlearnersdictionaries.com › definitionundo verb - Definition, pictures, pronunciation and usage ...

   www.oxfordlearnersdictionaries.com › definition

   • Cached

   Learn the meaning, pronunciation and examples of the verb undo, which can mean to open, cancel or make fail something. Find out the difference between undo and do up, and how to use undo as a computer command.

8. www.collinsdictionary.com › dictionary › englishUNDO definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   Learn the meaning, pronunciation, and usage of the verb undo, which can mean to loosen, reverse, or ruin something. See examples, synonyms, and related words for undo.

9. www.thefreedictionary.com › undoUndo - definition of undo by The Free Dictionary

   www.thefreedictionary.com › undo

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   Undo means to reverse, erase, or annul something, or to untie, unwrap, or open something. Learn the different meanings, synonyms, and examples of undo from various dictionaries and sources.