Related Clues:

• Alleviates
• Simplifies
• Suppresses
• 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
• Numbs
• Soothes
• Lessens