undo

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undo¹

  • /ʌnˈduː/ UK, US

Sounds like undue (yod-dropping) · Rhymes with -uː

Where it comes from

From Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”).

verb undoes · undoing · undid · undone

  1. transitive To reverse the effects of an action. Fortunately, we can undo most of the damage to the system by the war.
  2. transitive To unfasten. Could you undo my buckle for me?
  3. colloquial, transitive To unfasten the clothing of (a person). PROSTITUTE: Undo me. There's a dear.
  4. figuratively, transitive To impoverish or ruin, as in reputation; to cause the downfall of. Woe is me, for I am undone!

noun undos

  1. transitive An operation that reverses a previous action. How many undos does this program support?

undo²

  • /ʌnˈduː/ UK, US

Sounds like undue (yod-dropping) · Rhymes with -uː

adjective

  1. misspelling, transitive Misspelling of undue.undue

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