veto

Noun

• the power or right to prohibit or reject a proposed or intended act (especially the power of a chief executive to reject a bill passed by the legislature)

• a vote that blocks a decision

Verb

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

• vote against; refuse to endorse; refuse to assent
  • The President vetoed the bill
    

Related words

• Synonyms: 
  forbid , prohibit , interdict , proscribe , disallow , nix , blackball , negative
• Antonyms: 
  permit , allow , let , countenance