Usually means: Reversing an action or decision.
Definitions Related words Phrases Mentions Lyrics History Colors (New!) Easter eggs (New!)
We found 36 dictionaries that define the word Undo:

General (26 matching dictionaries)
  1. undo: Longman Dictionary of Contemporary English
  2. undo: Merriam-Webster
  3. undo: Oxford Learner's Dictionaries
  4. undo: American Heritage Dictionary of the English Language
  5. undo: Collins English Dictionary
  6. undo: Vocabulary.com
  7. Undo, undo: Wordnik
  8. undo: Cambridge Advanced Learner's Dictionary
  9. undo: Wiktionary
  10. undo: Webster's New World College Dictionary, 4th Ed.
  11. undo: The Wordsmyth English Dictionary-Thesaurus
  12. undo: Infoplease Dictionary
  13. undo: Dictionary.com
  14. undo: Online Etymology Dictionary
  15. undo: Cambridge Essential American English Dictionary
  16. Undo (Rush of Fools song), Undo (Sanna Nielsen song), Undo: Wikipedia, the Free Encyclopedia
  17. Undo: Online Plain Text English Dictionary
  18. undo: Webster's Revised Unabridged, 1913 Edition
  19. undo: Rhymezone
  20. undo: AllWords.com Multi-Lingual Dictionary
  21. undo: Webster's 1828 Dictionary
  22. undo: FreeDictionary.org
  23. undo: Mnemonic Dictionary
  24. undo: TheFreeDictionary.com

Business (2 matching dictionaries)
  1. MoneyGlossary.com (No longer online)
  2. undo: Legal dictionary

Computing (3 matching dictionaries)
  1. undo: CCI Computer
  2. Webopedia (No longer online)
  3. undo: Encyclopedia

Medicine (1 matching dictionary)
  1. undo: Medical dictionary

Miscellaneous (1 matching dictionary)
  1. Sound-Alike Words (No longer online)

Slang (1 matching dictionary)
  1. Undo: Urban Dictionary

Tech (2 matching dictionaries)
  1. Glossary of video terms (No longer online)
  2. Sweetwater Music (No longer online)

(Note: See undid as well.)

Google, News, Images, Wikipedia, Reddit, Scrabble
Definitions from Wiktionary (undo)

▸ verb:  To reverse the effects of an action.
▸ verb:  To unfasten.
▸ verb:  (figuratively) To impoverish or ruin, as in reputation; to cause the downfall of.
▸ noun:  (computing) An operation that reverses a previous action.
▸ adjective:  Misspelling of undue. [Excessive; going beyond that what is natural or sufficient.]

Similar:
unmake, back up, uncause, unreverse, unreconstruct, unrestore, uncast, cancel out, unalter, unmove, more...

Opposite:
redo

Types:
ctrl+z, command+z, undo button, edit menu, keyboard shortcut, redo button, history panel, step backward, more...

Phrases:
undo it, to undo, undo a wrongful imprisonment, impossible to undo, undo a knot, more...

Adjectives:
click, last, multiple, level, single, edit, incremental, simple, multilevel, previous, second

Colors:
    blue,     gray,     white,     black,     silver, more...


▸ Word origin

▸ Words similar to Undo

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▸ Idioms related to Undo

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▸ Popular adjectives describing Undo

▸ Popular nouns described by Undo

▸ Words that often appear near Undo

▸ Rhymes of Undo

▸ Invented words related to Undo

Similar:
unmake, back up, uncause, unreverse, unreconstruct, unrestore, uncast, cancel out, unalter, unmove, more...

Opposite:
redo

Types:
ctrl+z, command+z, undo button, edit menu, keyboard shortcut, redo button, history panel, step backward, more...

Phrases:
undo it, to undo, undo a wrongful imprisonment, impossible to undo, undo a knot, to undo a curse, undo bias, undo death, opposite of undo, more...

Adjectives:
click, last, multiple, level, single, edit, incremental, simple, multilevel, previous, second

Colors:
    blue,     gray,     white,     black,     silver, more...



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