Related Clues:

• Right to prevent proposed action
• Power to reject legislation
• Overrule and thoroughly investigate second in command
• Legislative turndown
• Gubernatorial turndown
• White House "no"
• Refuse to allow
• Official nix
• Second and last switch in Poll's bar
• Nixon nix, once
• Treats animals with love in Prohibition
• The right to forbid an action
• Rejection from the top
• Red light area of selective Toronto
• Governor's nix