forbid

forbid (http://definr.com/forbid)

     v 1: command against; "I forbid you to call me late at night"
          [syn: prohibit, interdict, proscribe, veto, disallow]
          [ant: permit, permit]
     2: keep from happening of arising; have the effect of
        preventing; "My sense of tact forbids an honest answer"
        [syn: prevent, forestall, foreclose, preclude]