Category: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.