Related Clues:

• Partly eat away
• Slowly reduce, as a cliff face
• Slip away, as support
• Gradually diminish
• Diminish slowly
• Diminish over time
• Shrink in increments
• Really get to
• Grind down
• Make upset
• Get on one's nerves
• Piss off
• Raise one's hackles
• Chip away, as support
• Shrink slowly