forbid

Verb

• 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
    

• command against
  • I forbid you to call me late at night
    
  • Mother vetoed the trip to the chocolate store
    
  • Dad nixed our plans
    

Related words

• Synonyms: 
  prevent , forestall , foreclose , preclude , prohibit , interdict , proscribe , veto , disallow , nix
• Antonyms: 
  permit , allow , let , countenance