Related Clues:

• Ruined
• Spoiled
• Defective
• Defaced
• Damaged
• Sullied
• Scratched, maybe
• Graffiti covered, e.g.
• Blemished
• Scratched up
• Impaired, spoilt
• 'Impaired, spoilt (6)'
• Spoilt
• With the knot tied, not one to be spoiled
• Sprayed graffiti on, say