Related Clues:

• Chip away
• Cut into
• Wear down
• Disassemble naturally
• Disintegrate
• Fall off, as popularity
• Disappear gradually
• Subject to ablation
• Lose underpinnings, e.g.
• Slowly lose ground
• Gradually destroy, as confidence
• Lessen gradually
• Wash away, as soil
• Diminish gradually
• Become weatherworn