Related Clues:

• Subject to ablation
• Part of a Christmas decoration
• Lose underpinnings, e.g.
• Slowly lose ground
• Pull back
• Gradually destroy, as confidence
• Come to a head?
• 'Chicago' lyricist
• Grow narrower
• Wash away, as soil
• Diminish gradually
• Become weatherworn
• Undergo recession
• Diminish, in a way
• Wash out to sea