29 clues for "UNDO":
- Go back! computer command
- Annul.
- Bring to naught
- Bring to ruin
- Cancel.
- Ctrl-Z
- Destroy
- Disassemble
- Edit-menu option
- Loosen
- Loosen a knot
- Nullify
- Open.
- Ravel.
- Release.
- Ruin.
- Take apart
- "Back up" PC command
- Bring to nought.
- Ctrl+Z command
- 'Go back,' in word processing
- "Go back," on an edit menu
- "Go back," on a PC
- "Go back" PC command
- Make null
- Remove wrappings.
- Reverse an action
- Unfasten.
- Upset