Related Clues:

• Blocks
• Frustrates
• Foils
• Hinders
• Ruins the plans of
• Short-circuits
• Gets in the way of
• Stymies
• Blocks the rowers' seats
• Obstructs rowers' benches
• Prevents the majority of the verrucas
• Blocks, prevents
• Prevents tooth enamel defects
• Foils, as a plan