Related Clues:

• Scare off
• Construct a roadblock
• Block the path of
• Keep (from)
• A way to discourage
• Fend off
• Wards off
• Forestalls
• Hinders
• Nip in the bud
• Stop, perhaps
• Get in the way of
• Dissuade by threat, maybe
• Give pause to
• Act as a disincentive to