UNDOING

untying, undoing, unfastening

(noun) loosening the ties that fasten something; “the tying of bow ties is an art; the untying is easy”

undoing

(noun) an act that makes a previous act of no effect (as if not done)

Source: WordNet® 3.1

Etymology 1

Noun

undoing (plural undoings)

The act of loosening or unfastening

Ruin; defeat, (also) that which causes defeat or ruin.

Annulment; reversal

Etymology 2

Verb

undoing

present participle of undo

Anagrams

• ounding

Source: Wiktionary

Un*do"ing, n.

1. The reversal of what has been done.

2. Ruin. "The utter undoing of some." Hooker.

UNDO

Un*do", v. t. Etym: [AS. und. See 1st Un-, and Do to perform.]

1. To reverse, as what has been done; to annul; to bring to naught. What's done can not be undone. Shak. To-morrow, ere the setting sun, She 'd all undo that she had done. Swift.

2. To loose; to open; to take to piece; to unfasten; to untie; hence, to unravel; to solve; as, to undo a knot; to undo a puzzling question; to undo a riddle. Tennyson. Pray you, undo this button. Shak. She took the spindle, and undoing the thread gradually, measured it. Sir W. Scott.

3. To bring to poverty; to impoverish; to ruin, as in reputation, morals, hopes, or the like; as, many are undone by unavoidable losses, but more undo themselves by vices and dissipation, or by indolence. That quaffing and drinking will undo you, Shak.

Source: Webster’s Unabridged Dictionary 1913 Edition