Related Clues:

• Lacking pep
• Lacking carbonation
• Sharp's counterpart
• Reason to pull over
• *See 61-Across
• Toneless
• Man with a top hat and cane, for short
• Decent chap
• Dull and lifeless
• Lady's guy
• Sharp's opposite
• Like plains
• Opposite of sharp
• Well-mannered bloke
• Motorist's headache