Related Clues:

• Go swiftly
• Grab onto
• Uninterrupted sequence
• Sweater flaw
• Negotiations delay
• Career
• Unforeseen complication
• ''Head for the hills!''
• Schedule spoiler
• It's 'catchy'
• Homer's outcome
• Nylon woe
• Hitch in plans
• Compete in a meet
• Something 18-, 26-, 42- or 51-Across might have