forbid in WordNet English dictionary

1. command against
   "I forbid you to call me late at night"; "Mother vetoed the trip to the chocolate store"; "Dad nixed our plans"
   forbid  prohibit  interdict  proscribe  veto  disallow  nix 
   
2. keep from happening or arising; make impossible
   "My sense of tact forbids an honest answer"; "Your role in the projects precludes your involvement in the competitive project"
   prevent  forestall  foreclose  preclude  forbid