What is the meaning of undoing?

noun

• An act that makes a previous act of no effect (as if not done. )
• Loosening the ties that fasten something.
  • usage: "the tying of bow ties is an art; the untying is easy"
  • synonyms: untying, unfastening

verb

• Cancel, annul, or reverse an action or its effect.
  • usage: "I wish I could undo my actions"
  • synonyms: undo
• Deprive of certain characteristics.
  • synonyms: unmake, undo
• Cause the ruin or downfall of.
  • usage: "A single mistake undid the President and he had to resign"
  • synonyms: undo
• Cause to become loose.
  • usage: "undo the shoelace"; "untie the knot"; "loosen the necktie"
  • synonyms: untie, undo, loosen
• Remove the outer cover or wrapping of.
  • usage: "Let's unwrap the gifts"; "undo the parcel"
  • synonyms: unwrap, undo