Related Clues:

• Sharp's opposite
• Like plains
• Opposite of sharp
• Motorist's headache
• Comfortable shoe
• What a 17-Across might get assistance with
• Below the intended pitch
• Outright
• Prostrate
• Like the plains
• London apartment
• Pump kin
• Fizzless, as a Coke
• One way to be turned down
• Needing tuning, maybe