Prevent

1. (v. t.) To go before; to precede; hence, to go before as a guide; to direct.

2. (v. t.) To be beforehand with; to anticipate.

3. (v. t.) To intercept; to hinder; to frustrate; to stop; to thwart.

4. (v. i.) To come before the usual time.

Thesaurus Entries

abort, anticipate, arrest, avert, avoid, baffle, balk, ban, bar, block, check, control, curb, dam, debar, deflect, delay, deny, deter, disallow, discourage, dishearten, embargo, enjoin, estop, exclude, exclude from, fend, fend off, foil, forbid, foreclose, forestall, frustrate, hamper, help, hinder, impede, inhibit, intercept, interdict, interrupt, keep from, keep off, mitigate, obstruct, obviate, outlaw, preclude, prohibit, proscribe, refuse, reject, repel, repress, restrain, retard, rule out, save, say no to, shut out, slow, stave off, suppress, taboo, thwart, turn aside, ward, ward off