v. 25B6; verb STOP, put a stop to, avert, nip in the bud, fend off, stave off, ward off; hinder, impede, hamper, obstruct, baulk, foil, thwart, forestall, counteract, inhibit, curb, restrain, preclude, pre-empt, save, help; disallow, prohibit, forbid, proscribe, exclude, debar, bar; poetic/literary stay.
allow.