[uhn-doo] 
| 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. |
