undoing
1. [ noun ] an act that makes a previous act of no effect (as if not done)
Related terms: about-face undo
2. [ noun ] loosening the ties that fasten something
Synonyms: unfastening untying
Examples:

"the tying of bow ties is an art the untying is easy"

Related terms: loosening unfasten loosen
Similar spelling:   untying
  uniting
  undying
  undone
  undine
  untwine
  unthinking
  unwitting
  untinted
  unheeding
  untangle
  untainted