undoing

nouns

an act that makes a previous act of no effect (as if not done)
undoing
is derived from
undo
is a type of (narrower)
a major change in attitude or principle or point of view
"an about-face on foreign policy"
about-face, policy change, reversal, volte-face
loosening the ties that fasten something
"the tying of bow ties is an art; the untying is easy"
undoing, unfastening, untying
is derived from
undo