prohibit

Synonyms: ban block bottle up box in bring to screeching halt constrain cool cork debar disallow enjoin forbid forfend freeze gridlock halt hamper hang up hinder hold up impede inhibit interdict jam up keep lid on kill lock up nix obstruct outlaw pass on preclude prevent proscribe put a lock on put a stopper in put chill on put down put half nelson on restrain restrict rule out shut out spike stymie taboo throw cold water on tie up veto zing

Antonyms: allow favor permit push