Meaning of undo

Definition of undo

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

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