Verb

• S: (v) undo (cancel, annul, or reverse an action or its effect) "I wish I could undo my actions"
• S: (v) unmake, undo (deprive of certain characteristics)
• S: (v) undo (cause the ruin or downfall of) "A single mistake undid the President and he had to resign"
• S: (v) untie, undo, loosen (cause to become loose) "undo the shoelace"; "untie the knot"; "loosen the necktie"
• S: (v) unwrap, undo (remove the outer cover or wrapping of) "Let's unwrap the gifts!"; "undo the parcel"