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Verb: undo (undid,undone)  ,ún'doo
  1. Cancel, annul, or reverse an action or its effect
    "I wish I could undo my actions"
     
  2. Deprive of certain characteristics
    "God himself cannot unmake the past or undo what is done";
    - unmake
     
  3. Cause the ruin or downfall of
    "A single mistake undid the President and he had to resign"
     
  4. Cause to become loose
    "undo the shoelace";
    - untie
     
  5. Remove the outer cover or wrapping of
    "undo the parcel";
    - unwrap

Derived forms: undone, undid, undoes, undoing

Type of: alter, change, change by reversal, expose, modify, reverse, ruin, turn, uncover

Encyclopedia: Undo