UNDO v.
overish; 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.
VACUUM n.
A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum.…
VAIN a.
Having no real substance, value, or importance; empty; void; worthless; unsatisfying. "Thy vain excuse." Shak. Every man walketh in a vain show. Ps. xxxix. 6. Let no man deceive you with vain words. Eph. v. 6. Vain pomp, and glory of this world, I hate ye! Shak. Vain visdom all, and false philosophy. Milton.…