Related Clues:

• Delay progress of (something)
• Slow Persians' leader captured by current enemy of his?
• Delay (progress)
• Wouldn't allow recitation of Shakespeare?
• Blocked (progress)
• One politician with paper runners obstructed
• Delay; block
• Block, delay
• Delay, block
• Sound writer of heroic verse affected by Prohibition?
• One old Iranian drinks quietly in bar
• Try to stop the epidemic spreading, for a start
• Victim -- pedestrian with packed hamper
• Precluded, obstructed
• That's about a thousand exercise and five hundred delay