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undid

[uhn-did] /ʌnˈdɪd/
verb
1.
simple past tense of undo.

undo

[uhn-doo] /ʌnˈdu/
verb (used with object), undid, undone, undoing.
1.
to reverse the doing of; cause to be as if never done:
Murder once done can never be undone.
2.
to do away with; erase; efface:
to undo the havoc done by the storm.
3.
to bring to ruin or disaster; destroy:
In the end his lies undid him.
4.
to unfasten by releasing:
to undo a gate; to undo a button.
5.
to untie or loose (a knot, rope, etc.).
6.
to open (a package, wrapping, etc.).
7.
Archaic. to explain; interpret.
Origin of undo
900
before 900; Middle English; Old English undōn; cognate with Dutch ontdoen. See un-2, do1
Related forms
undoable, adjective
Can be confused
undo, undue.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for undid
Contemporary Examples
Historical Examples
  • Panting, she undid the scarf and flooded the room with light.

  • The Prince stood by the window and undid the packet with trembling hands.

  • She took down the parcel from the shelf and undid the string.

    One Day's Courtship Robert Barr
  • Juve relighted the lamp, and undid the black serge covering of the bundle.

    A Nest of Spies Pierre Souvestre
  • He undid the wrapping of the lawyer's letter and, as he read, the blood went from his face.

    Murder Point

    Coningsby Dawson
  • Instead of that, he undid it, or rather permitted it to be undone.

    Woodrow Wilson's Administration and Achievements

    Frank B. Lord and James William Bryan
  • Marry, if you would put me to verses or to dance for your sake, Kate, why you undid me.

    King Henry the Fifth William Shakespeare
  • Miller undid the package as cautiously as if it were an infernal machine.

    The Shadow World

    Hamlin Garland
  • Getting up she undid the heavy shawl and the two little dresses.

    Heidi Johanna Spyri
British Dictionary definitions for undid

undid

/ʌnˈdɪd/
verb
1.
the past tense of undo

undo

/ʌnˈduː/
verb (mainly transitive) -does, -doing, -did, -done
1.
(also intransitive) to untie, unwrap, or open or become untied, unwrapped, etc
2.
to reverse the effects of
3.
to cause the downfall of
4.
(obsolete) to explain or solve
Derived Forms
undoer, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for undid

undo

v.

Old English undon "to unfasten and open" (a window or door), "to unfasten by releasing from a fixed position," from un- (2) + do (v.). The notion is of "to annul something that was done." Related: Undone; undoing.

Online Etymology Dictionary, © 2010 Douglas Harper
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