Related Clues:

• Abates
• Becomes less jammed, as traffic
• Diminishes
• Greases the wheels for, say
• Dulls, as pain
• Relieves, as pain
• Moves slowly and carefully
• Eases off
• Mollifies
• Soothes
• Lessens
• Palliates
• Lessens, as pain
• Dies down
• Quiets down