<p><strong>Verb (used with object)</strong></p><ul><li>to reverse the doing of; cause to be as if never done: Murder once done can never be undone.</li><li>to do away with; erase; efface: to undo the havoc done by the storm.</li><li>to bring to ruin or disaster; destroy: In the end his lies undid him.</li><li>to unfasten by releasing: to undo a gate; to undo a button.</li><li>to untie or loose (a knot, rope, etc.).</li><li>to open (a package, wrapping, etc.).</li><li>Archaic: to explain; interpret.</li></ul><p><strong>End of Response</strong></p>