undo

Meanings

1. 1
   verb

   cause to become loose

   undo the shoelace

2. 2
   verb

   cancel, annul, or reverse an action or its effect

   I wish I could undo my actions

3. 3
   verb

   To reverse the effects of an action.

   Fortunately, we can undo most of the damage to the system by the war.

4. 4
   verb

   To unfasten.

   Could you undo my buckle for me?

5. 5
   verb

   To unfasten the clothing of (a person).

   PROSTITUTE: Undo me. There's a dear.

6. 6
   verb

   To impoverish or ruin, as in reputation; to cause the downfall of.

   Woe is me, for I am undone!

7. 7
   noun

   An operation that reverses a previous action.

   How many undos does this program support?

8. 8
   verb

   remove the outer cover or wrapping of

Etymology

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”).