Related Clues:

• Gnaw at
• Crumble away
• Crumble over time
• Disappear slowly but surely
• Chip away at, as confidence
• Rub away
• Wear away, as popularity
• Wash away
• Become worn down
• Shorelines do it
• Eat at the bank?
• Gradually destroy, as shoreline
• Show signs of weakening
• Gnaw at
• Eat away at the beach?